Barcelona midfielder Cesc Fabregas has admitted he is not completely happy at the Camp Nou, reports ESPN.
Manchester United's number one summer target has featured in 16 of Barcelona's first 19 games of the season - but believes he is not in Gerardo Martino's first choice starting line-up.
"I know the boss has a starting team in his head, and I am not in it," said Fabregas.
"I played a good game against Celta, and then I was left out for most of the two games [against Espanyol and AC Milan], and that really messes you up.
"Today I wanted to vindicate myself so that does not happen again."
Fabregas' latest comments could spark Manchester United into renewing their interest in the 26-year-old, as David Moyes is still reportedly keen on signing a world-class central midfielder.
Manchester United chased a number of outstanding midfield players in the summer - but was only able to convince Marouane Fellaini into moving to Old Trafford.
However Fellaini has so far struggled to get to grips with life at Manchester United and has even dropped behind Phil Jones in the Red Devils' midfield pecking order.
Fabregas, who scored two goals against Real Betis on Sunday, returned to the side after having to settle for a 12-minute cameo appearance against AC Milan on Wednesday.