The Camp Nou club currently sit top of La Liga on goals scored ahead of Atletico Madrid, but Martino is allegedly unhappy with the fact he must stick to Barca's philosophy, rather than bring in his own ideas.
And while he refused to confirm he would be at the club next season, Martino rubbished reports he was unsettled.
"I am very happy at this club and in this city, I like the way the team plays," he said.
"The future is not something I can guarantee because every three days things change depending on results and performances.
"If I stay on as Barcelona manager, it will be because I have done things very well."
"After Christmas he'll be training in Rosario and I’m sure I'll go and see him," said Martino ahead of Sunday's trip to Getafe. "But in any case, we are fully informed about his progress.
"He'll be in perfect condition to rejoin the team in the new year."
