Foster arrived from Stoke City in July 2005, and spent his first two seasons as a United player on loan at Watford, where his excellent form led to an international debut in February 2007.
His second campaign at Vicarage Road was curtailed by a cruciate knee ligament injury, delaying his United debut until March 2008.
A hero of United's 2008/09 Carling Cup final victory over Tottenham, Ben's first sustained spell of involvement came in the early part of last season.
However, the enduring excellence of Edwin van der Sar restricted Foster to just one appearance in 2010, prompting him to move in search of regular first-team football.
Everybody at Manchester United would like to wish Ben well for the future.
Debut: v Derby County, 15 March 2008
FA Cup: 3
Carling Cup: 4
Goals conceded: 20
Clean sheets: 10