The 27-year-old joined the club last September on a free transfer as injury cover after Neil Taylor broke his leg in an early season game against Sunderland.
"I don't think I will be here next year," Tiendalli told WalesOnline.
"I had a one-year contract and I haven't heard anything from the club about changing that.
"I am not disappointed because I know what I can do and I think I've shown it in the games I've played."
Tiendalli has made 17 appearances for Michael Laudrup's side this season.