West Brom will be without veteran defender Paul Scharner next season as he will not be renewing his contract at the Hawthorns when it runs out at the end of this season
The 32-year-old needed to play 25 matches this season to trigger an automatic one-year extension, but he has only played 54 games overall since August 2010, after arriving from Wigan.
The Austria international said: “I think I’ve concluded my mission at West Brom by helping them to stay in the Premier League. I’ve never been relegated and I’m very proud of this.
“I didn’t take up the (contract) option because it was impossible as I have not played enough games. To do so (stay) would need new negotiations - and that won’t be happening.
“I would like to stay because of the supporters, who are great, but the club has other plans, so it is time to move on.
“But I think I still have enough to offer someone and have set myself a new challenge somewhere else. It is time to finish off the season and then decide on my future.”