Chelsea are poised to reignite their interest in Jesus Corona, but will need to complete a deal before June to avoid an additional £12.6m being added to the Porto man's release clause.
Corona has impressed this season, chipping in with three goals and 11 assists in 40 appearances, and he and Porto are set for a Champions League quarter final showdown with Chelsea in April.
The Blues were linked with a move for the 28-year-old last summer, and despite former boss Frank Lampard having since been replaced by Thomas Tuchel, the club's interest still remains.
According to Portuguese news outlet O Jogo (via the Daily Mail), Chelsea are again targeting Corona. The Mexican international has a £21.4m release clause in his contract, but this is only active until June 2021. From June onwards, Chelsea or any other interested party would be required to cough up £34m to secure his services.
"At some point we talked to them [Chelsea]. I cannot say if he's option A, B or C, now they are rather rumours," Bunge said. "We'll have to wait a bit for this to continue moving forward and for the leagues to begin again, and from there see what the next movements will be because the market is a little bit stopped.
"He has two years left on his contract. He did awaken a lot of interest for his participation in this particular tournament [Primeira Liga], which has been outstanding and at a high level, but now with the current situation of the virus everything has slowed down a bit. The signings are in quarantine.'
Capable of operating as a winger or full-back, Corona joined Porto from FC Twente in 2015. His current deal is set to expire in 2022.