Lincoln release defender Jackson

[Getty Images]Defender Adam Jackson has had his Lincoln City contract terminated by mutual consent, but will continue to train with the Championship side while he searches for a new club. The 32-year-old was told earlier in the summer that he would not be included in the Imps' 25-man squad this season, but he failed to get a move away before the transfer window closed.Jackson has been with Lincoln for six years and has featured 179 times across all competitions.His only appearance this season ca