Stoke City goalkeeper Thomas Sorensen has expressed his frustration over manager Tony Pulis's rotation system this season.

The Dane has shared responsibilities between the sticks with Asmir Begovic due to the number of games that the Potters have played both domestically and in Europe.

"I am frustrated, but the coach has kept his rotation system all season," he told Ekstra Bladet.

"I have got to accept that he wants everyone to be in shape. He has also done the same with the other players."

Stoke, who are currently 12th in the Premier League table, host Norwich City on Saturday.