STEPHEN FOSTER'S short Tranmere career came to an end when his contract was cancelled by mutual consent less than a month into the new season.
The 32-year-old centre back from Warrington joined Rovers in the summer from Barnsley and signed a two-year deal.
But he has struggled for form through the early weeks of the League One campaign.
Manager Ronnie Moore said: “After discussing things with Stephen it was agreed that it was in the best interests of both parties if we part company.
“I wish him the best of luck in his future.
“It leaves us short in an important position but I hope to bring in a replacement as soon as possible.”
Foster added: “I’d like to thank everyone at the club, the players and the fans for everything since I’ve been here and I’m really sorry it hasn’t worked out.”
Foster played more than 240 games for Barnsley, most of them in the Championship, including 34 appearances last season.
A career covering more than 500 games also included spells at Crewe Alexandra and Burnley.
However, he was unable to find his best form in a Tranmere shirt during five appearances this month and looked to be missing some of the pace that had been one of his principal attributes as a defender.
Foster was withdrawn at half-time in Tranmere's last League One outing, a 5-0 defeat by Peterborough United at Prenton Park, last Saturday.
His place in the starting line-up was taken by 40-year-old veteran Ian Goodison for the Capital One Cup second round tie against Bolton Wanderers on Tuesday.
Rovers produced their best performance of the season in knocking Bolton out of the competition in a penalty shootout, with Goodison at the heart of an improved defensive display.
The cancelling of Foster's contract should release funds that will allow Moore to pursue a search for a permanent replacement in the transfer market.