Barcelona are reportedly prepared to fine Lionel Messi after the forward missed the resumption of first-team training.
After expressing a desire to leave Camp Nou during the summer transfer window, the 33-year-old is said to have informed club officials that he would not be taking part in coronavirus tests ahead of Ronald Koeman's first session.
As expected, this transpired over the weekend, but it appears that Barcelona are prepared to take action against their legendary attacker.
According to Marca, the Catalan giants are willing to hand Messi a seven-figure fine if he maintains his absence from club duty.
The Argentine allegedly no longer considers himself to be a Barcelona player, believing that a contract clause entitles him to depart on a free transfer.
Manchester City continue to monitor the situation ahead of making an official approach.