Arsenal manager Arsene Wenger has said he is not concerned by fresh speculation suggesting star midfielder Cesc Fabregas will join Barcelona in the summer. The La Liga champions have made no secret of their desire to return the former Camp Nou academy graduate to his homeland and reports in Spain have indicated the 22-year-old has verbally agreed to switch back to Barca at the end of the season. The Spain international has admitted he would like to move back to Spain at some point in his career but has said he has no immediate desire to quit Emirates Stadium. Wenger has reiterated his determination to keep hold of Fabregas and insists he remains a vital member of his squad. "There is no concern at all," he said. "What is more of a concern is that we try everything to win something. "He is committed when he plays, what's the future? We don't know what will happen in six months, in two years, in five years."