Iker Casillas has been warned as to his future conduct by Jose Mourinho after spending too long mingling with rival players.
The Real Madrid keeper took the time to speak with almost all of the Barcelona side at the end of Sunday's El Clasico clash at Camp Nou.
Mourinho believes Casillas should not be fraternising with supposed arch-enemies so publicly and would rather he headed straight for the dressing room at the final whistle.
"I was aware of what Casillas did and next time he can stay with them," said the Real boss.
In the wake of an enthralling encounter which ended 2-2, Casillas spoke at length with Barca's two-goal hero Lionel Messi, before going on to catch up with his Spanish international colleagues.
The Real stalwart has come in for criticism from certain sections of the Madrid press for his performance in Catalunya, both during and after the game.
His efforts in attempting to stop a Messi free-kick, which handed Barca a 2-1 lead, have been questioned, but Mourinho feels such comments are harsh.
"For the first goal Casillas was slow, but for the second one all of the credit must go to the free-kick taker," he added.