Manchester United and Manchester City have been encouraged after it emerged Kingsley Coman has changed agents.
The Bayern Munich star has seen new contract talks deadlocked for several months as he seeks parity with the club's highest earners.
His situation has attracted interest from City and United, which made an attempt to sign the France international last summer.
Sky Deutschland says Coman has changed agents to Pini Zahavi - who already represents teammates David Alaba and Robert Lewandowski.
Bayern have had an open conflict with Zahavi regarding Alaba's failed contract negotiations.
Former Bavarian President Uli Hoeness went on a rampage last fall, calling Zahavi "a money-hungry pirana".
Coman's current deal runs to 2023.