Matthew Upson unhappy at Stoke?

Stoke City defender Matthew Upson is considering his future after just six months at the club, according to The Mirror.

The 32-year-old defender joined the Potters from West Ham in the summer, but has made just five Premier League starts for Tony Pulis's side.

He has also failed to make the bench for Stoke's last two league fixtures, seemingly ending his slim hopes of forcing his way into England's Euro 2012 squad.

Meanwhile, Stoke chairman Peter Coates has ruled out the club making any new signings before the end of the January window.

"We have a quite a large squad, and feel we are well served with cover," said Coates.

The Potters travel to Derby County in the fourth round of the FA Cup on Saturday.