The Red Devils forward is determined to appear on a more regular basis, even if it means seeking a future away from Old Trafford after falling down the team's pecking order
The 31-year-old Bulgarian made only 21 appearances for United last season as he was overlooked in favour of Danny Welbeck and Javier Hernandez as Wayne Rooney's strike partner.
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The former Bayer Leverkusen man's future first came into question when he was surprisingly left out of United’s matchday squad for the 2011 Champions League final clash with Barcelona at Wembley, despite being the joint-leading goalscorer in the Premier League that season.
And after a summer of speculation about a proposed move away from Manchester, Berbatov took to social media to vent his frustrations.
“The truth is, I love this club, but I am not going to be useful to anyone, if I am not playing,” he wrote on his Facebook page. “And I want to play, I want to help.
“But for unknown reasons its not going to happen, or my chances will be limited, so it's better for everyone if we say goodbye.
“If not, I am professional and I will keep doing everything I can, to help my team and my teammates, whenever I have opportunity to do so.”
There has been debate about what asking price Manchester United have put on the player they signed for a club record £30million in 2008 from Tottenham.
And Berbatov also revealed his frustration about the transfer figure on his head on Facebook.
“Because I am tired of speculation,i am telling you this. I read the papers and I see they say 10 million pounds is my price," he added.
"I go and talk with Sir Alex, and he says to me 5 million...So who is telling the truth, what do you think??"