Barcelona have announced that Martin Montoya has signed a new contract with the club which will keep him at Camp Nou until the summer of 2014.The 20-year-old defender’s new contract contains a buy-out clause of £10 million until the end of the season which will then be raised to £16.6m in 2012-13.Montoya\'s previous agreement was set to expire next summer and he had been linked with a move to Roma to link up with former Barcelona B team coach Luis Enrique.The right-back has made just one appearance for the senior side, in the Champions League against BATE Borisov, but is considered one of Spain’s brightest young prospects and has already received a call-up to the national team.