"Billy Wagner wants to be a closer next season, regardless of the team.

That's why the New York Mets reliever says Boston must guarantee it will decline his contract option for 2010 before he would approve a potential trade to the Red Sox, who already have an All-Star closer in Jonathan Papelbon.

Wagner has a no-trade clause in his contract, which includes an $8 million option for next year with a $1 million buyout. If his option is declined, he can become a free agent in the offseason and sign with any team.

Wagner confirmed Monday that Boston placed a waiver claim on him last Friday. The Mets have until Tuesday to trade him to the Red Sox, pull him back off waivers or assign him to Boston for nothing in return.

Wagner hasn't pitched since last Thursday, and his possible participation in the Mets' game against the Philadelphia Phillies on Monday may be a factor in determining whether he ultimately winds up with the Red Sox."