The central defender signed from
Despite making 15 starts last term, Foster had not appeared at all under new manager John Schofield.
The 21-year old has, however, already agreed a deal with non-league Stalybridge Celtic, and goes straight into their squad to play
Foster joins strikers Gary Birch (released) and Martin Gritton (on-loan) in leaving Sincil Bank over the last few days, with Birch having joined Telford United yesterday.