Sunderland striker Jermain Defoe says he is being played out of position, as manager Dick Advocaat has pushed him out onto the wing so far this season.
Defoe, 32, joined the club from MLS side Toronto in January 2015, but has struggled for form as Sunderland have slipped to the bottom of the Premier League after losing both their opening games, against Leicester and Norwich.
The striker has netted more than 200 times during a career which has seen him play for West Ham, Portsmouth, Tottenham and England, as well as Bournemouth, Toronto and Sunderland, but is growing tired on life on the wing with Steven Fletcher preferred in a central role.
"It goes without saying that I still feel that I've got more to offer, but I need that to be up front -- in the position I know best," he told The Daily Mirror. "I still feel that I've got more years in me. I'm fit, I don't drink, don't smoke, I like to stay professional and I love the game.
"All I want to do is play in the position where I know that I can do best. That is up front scoring goals.
"I will always do what I can to help the team but I want to do even more so that we are not in a position where things get even harder for us."
Defoe has recently been linked with a return to Bournemouth, but gave no hints about whether he would be ready to quit Sunderland.
"You never know happens in the transfer window, so it's not for me to talk about my future," he added. "The club decides that, not me.
"If the club don't agree to it, then no player goes anywhere.