Barcelona may be forced to change their January transfer plans after Samuel Umtiti picked up a hamstring injury against Celta Vigo.
The French centre-back was forced off in the 72nd minute of the 2-2 draw at the Camp Nou to hand Ernesto Valverde a selection headache for the next few months.
Chinese Super League clubs have been keeping tabs on Mascherano, who has dropped down the pecking order at the Nou Camp.
Catalunya Radio report he has already informed Barcelona of his desire to leave the club, either in January or at the end of the season.
Catalan newspaper Sport , however, say that Mascherano is third choice after Umtiti and Gerard Pique and that Valverde will not allow the Argentine defender to leave in January.