CSKA Moscow are eyeing Everton striker Jo.
Jo is on-loan at Everton from Manchester City and former club CSKA want to re-sign him next month.
CSKA hope to persuade their former player to return to Moscow on a short-term deal.
The move could become an £11million permanent transfer.
Jo's agent Giuliano Bertolucci admitted his player's future at Goodison Park was in doubt. He said: "With regard to Everton, nothing is clear. We haven't spoken about extending the loan or the club buying him from Manchester City."