The Champions League is the pinnacle of European club football; it presents clubs and players with a chance to assert themselves on the biggest stage, with the largest crowds and the grandest final prize.
Sometimes players performing valiantly for their respective managers can be a wolf in sheep's clothing, as they further propel themselves onto the radars of the so-called 'big boys' of European football.
With all transfer activity withheld until the warm weather returns, we take a look at some of the standout stars of the last 16 who could be of interest to Premier League sides come the summer.
Here are six names who are likely to be murmured in board meetings all across England up until the season concludes.
6. Serge Gnabry - Bayern Munich
The 23-year-old German was a lively figure on Tuesday as Bayern Munich left Merseyside with a credible 0-0 draw, causing Andrew Robertson one or two problems down the right hand side.
In an ageing Bayern side, Gnabry has found himself thrust into the starting lineup on a more frequent basis this term. Arjen Robben and Franck Ribery are both the wrong side of 30, as Niko Kovac has an eye on the future with the skilful winger now beginning to showcase the talent he unquestionably had in his locker for some time.
It has been anything but smooth sailing for the pacey player up until now, however. He spent five years at Arsenal where he was never able to fully blossom, resulting in a move to Werder Bremen in 2016, where a stellar debut Bundesliga season had Bayern snapping the player up after just one season. He had a loan stint at Hoffenheim the following campaign but is now back in the first team fold. Finally being able to display his talent, he also holds valuable Premier League experience, something that could tempt any potential English clubs that he might be ready for another crack on these shores.
5. Nicolò Zaniolo - Roma
Sometimes all it takes is one match to place yourself on a club's radar, something Nicolò Zaniolo certainly did in Roma's 2-1 win over Porto.
The 19-year-old Italian bagged a brace as the Giallorossi secured a first leg advantage over the Portuguese side in their quest for the Champions League quarter finals. Zaniolo was on the books at Inter last season but never made a senior appearance for the club prior to his move to their Serie A rivals.
The versatile midfielder has a creative spark which any Premier League club would welcome. His ability to play incisive passes while running at speed is a key trait, while his maturity and calmness in possession is imperative in England's top division. He is still someway off the finished article, but in a footballing world where potential is seemingly more important than previous performance, he's one to look out for.
4. Ferland Mendy - Lyon
Considered the 'Mbappe of left backs', Ferland Mendy is someone who shone when presented with the daunting task of dealing with Lionel Messi on Tuesday night.
Inevitably, due to his name and position, he is likened to Benjamin Mendy of Manchester City, but the 23-year-old has been compared more so to the PSG star as a result of his relentless work put in down the left hand side. The Frenchman possesses great tactical awareness and solidarity, visible throughout the Barcelona tie, and is technically sound, with a more than capable right foot to go with his gifted left.
After strikers, full backs are often the most sought after role in modern football, with the emphasis on joining attacks and constantly overlapping needing to be finely balanced with defensive astuteness. Come the summer, more Premier League clubs will be desperate for such a commodity, and Mendy will certainly get a mention.
3. Thomas Partey - Atletico Madrid
Ghanaian midfielder Thomas Partey has gone somewhat under the radar at an Atletico side where much of the focus is on their defence or Antione Griezmann. However, Partey should be in that conversation.
The 25-year-old is industrious in midfield and has an eagle eye for a pass, while similarly being able to break up opposing attacks with apparent ease. Certainly, he is one of the more underrated players in La Liga, with a versatility that has seen him used at both right back and as a winger at Los Rojiblancos.
Having been involved in the set up at Atletico since 2011, he is another fine example of the excellent youth academy Diego Simeone has at his disposal. Perhaps under-appreciated in the Spanish capital, many Premier League sides would be keen on the Ghanaian, as he continues to impress across all competitions for Atletico.
2. Presnel Kimpembe - PSG
Another young prospect in the never ending French supply line, Presnel Kimpembe is causing a storm in his native country with Ligue 1 giants PSG. Having spent his entire professional career in the capital, the centre half bagged his first senior goal for the club in the 2-0 win over Manchester United at Old Trafford.
After featuring 28 times in the league last season, he has only made 13 outings for Les Parisiens, yet has still succeeded in grasping the attention of clubs all across Europe. At only 23, Kimpembe has composure in tight situations with the ability to bring the ball out into midfield, a trait most desirable in the modern game. Standing at six foot tall, the stopper is aggressive in the tackle with a surprisingly quick acceleration for someone of his build.
It will take more than money to prize the Frenchman away from PSG, but should the club falter in the Champions League, he might seek to test himself in the more demanding Premier League.
1. Tanguy Ndombele - Lyon
There is a reason that Manchester City have been earmarked as a potential new home for Tanguy Ndombele, because he's that good.
He once again showed the world why clubs are on the lookout for the central midfielder, with another impressive showing in his side's 0-0 stalemate with Barcelona on Tuesday. Demonstrating exceptional composure on the ball, coupled with the confidence to throw in a few tricks and flicks, he shone in a match littered with world class talent.
With a range of pass in the ilk of Toni Kroos, combined with his maturity in reacting to danger, his tireless performances have been a key component in Lyon's impressive season thus far. With top outfits already keeping tabs on the 22-year-old, the rumour mill will be in full swing with Ndombele come summer time.