Barcelona management believe Ousmane Dembele is attempting to engineer him out of the club.
Dembele's contract expires at the end of the season and he is being linked with a move to England, where Manchester United and Liverpool are keen.
Barca's board are eager to keep hold of the attacker and have been trying to reach agreement over a new deal.
However, Mundo Deportivo says they've been unimpressed by the approach of agent Moussa Sissoko in negotiations.
Barca directors are convinced Sissoko is attempting to move Dembele away, knowing he will be due a massive broker's fee if his client lands himself a new transfer.