The 36-year-old accepts that Potters boss Tony Pulis has a tough decision to make.
"I don't think much has changed from last season," Sorensen told The Sentinel.
"There are two good keepers fighting to be No.1. It's a good situation for the manager.
"It will be frustrating for one keeper, but the manager has proved he is willing to go to either keeper and is willing to give us both a fair chance."