Outgoing club captain Andreas Iniesta has warned Barcelona hierarchy over Sergio Busquets over the future of the midfielder.
The 29-year-old Spain international has had trouble getting the board to stick to their word and give him a new, improved contract.
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Gerard Pique and Lionel Messi will stand along Busquets as the remaining men from the Pep Guardiola era of the club once Iniesta bids farewell to the Camp Nou on Sunday.
"It would be a huge error if Busquets did not continue at Barca, for what he means as a player, but I don't think that will happen because he's got a lot more years left in him and I understand he's a fundamental player.
"I don't know the personal situation, but the club should not allow doubts that this would happen. I don't think the club will allow it." Iniesta told RAC1.
Iniesta will be playing his last match for Barcelona in the La Liga encounter on against Real Sociedad on Sunday.