​Manchester United look set to miss out on their long-term key transfer target Antoine Griezmann, as the French superstar is believed to have agreed terms with La Liga giants Barcelona. 


United were believed to be close to signing the talented forward last summer, but Atléti's transfer embargo was a crucial factor in Griezmann deciding to stay.


As reported by French news outlet Le10Sport, via Calcio Mercato, Barcelona have already agreed a highly lucrative, five-year contract with the 26-year-old, which could be worth around €20m per-year. 


Barça are desperate to find a successor to Neymar, with original replacement Ousmane Dembélé currently out with a muscular injury until at least January 2018.

​​Griezmann could cost Barcelona an eye-watering €200m, after El Colchoneros doubled the forward's release clause from €100m to ward off potential suitors last summer. 


Atléti now appeared to have accepted that they are unable to hang onto Griezmann any longer, so will look to push Barcelona as close to the €200m mark as they can to land a huge transfer fee.


The former Real Sociedad man has been playing in the Spanish capital for four seasons, and has become one of the most talented and exciting players in world football over this time. 


Griezmann burst onto the scene in 2014, after scoring 22 goals in one season, he went on to repeat the same feat the following season, putting Europe's elite on high-alert in the process.

Griezmann will have a chance to build upon his impressive Euro 2016 display when he turns out for France in the World Cup 2018 in Russia. 


At the previous international tournament, Griezmann was in excellent scoring form, bagging goals against Albania, the Republic of Ireland, Iceland and Germany as his side fell at the final hurdle to the victorious Portugal.