The 33-year-old joined the club on a free transfer following their promotion to the Premier League.
Sorensen will extend his stay for another two years.
“We’ve more or less agreed the contract,” Sorensen told BBC Radio Stoke. “I just need to sign it.
“It’s great that it’s sorted out and I can focus on the future here at Stoke because it looks very bright.”
“Obviously you need to perform and give something to the club, but then at the same time it’s nice to be rewarded,” Sorensen added.
“It’s a good club and it shows that if you do well, you get the rewards for it.”
