Assaidi could make his Stoke debut in Wednesday night's Capital One Cup second-round home clash with Sky Bet League One outfit Walsall.
He told his new club's official website: "It was frustrating last season, especially having not been given too many opportunities on the pitch.
"But I am here now and I am looking forward to playing in the Premier League.
"When I did play last season I thought I did well, and the experiences I did have on the field has given me an understanding of what to expect in the Premier League."
He added: "I spoke to the manager here (Mark Hughes) and he told me his hopes for the season and how he sees me fitting into the team.
"He made it a very attractive move for me to be honest.
"He plays football the right way, the way that I want to play, and it was quite an easy decision for me to make in the end.
"I came to the game on Saturday (Stoke's 2-1 Premier League home win against Crystal Palace) and watched the match and I was impressed. I feel I can fit in here well and help the team to progress."
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