Manchester United striker Dimitar Berbatov has described himself as a "strange guy" that has at times let his hefty price tag affect him.[LNB] Berbatov endured a mixed first two seasons at Old Trafford and was generally considered a flop by United's supporters but his form this season has led to a change in attitude towards the £30.75million signing.[LNB]Seven goals already this season have sent him soaring to the top of the Premier League scoring charts and his match-winning hat-trick against Liverpool last weekend was the first by a United player in the fixture since 1946.[LNB]For Berbatov, it could go down as the day he was finally freed from his shackles.[LNB]"I suppose I am a strange guy but I am shy and maybe some people don't realise that," he said in an interview with MUTV.[LNB]"I have a difficulty letting someone else into my inner circle.[LNB]"I tried not to think about it (the fee) but sometimes you just can't help it.[LNB]"You start thinking, 'That's a lot of money, what is going to happen if I don't prove good enough or I don't score enough goals?'.[LNB]"It was always going through my mind and sometimes it can be bad for your concentration and your skills because it distracts you from the main goal.[LNB]"In the end I just have to relax and play. I am playing for the biggest club in the world and that's it - nobody can say anything else."[LNB]Berbatov has always been viewed as being a little different and that is summed up by the moment that gave him most pleasure two seasons ago - a superb pivot past James Collins to set up Cristiano Ronaldo's tap-in against West Ham.[LNB]"I watched it at home and rewound it in my head," he revealed.[LNB]"I was the luckiest guy in the world doing that. It gave me pleasure."[LNB]That is just Berbatov's take on the game.[LNB]"I am a striker. People expect me to score many goals," he said.[LNB]"But sometimes the difficult pass, the pass no-one else can see, when you make it happen, it is more important than scoring the goal.[LNB]"It gives you a bigger feeling.[LNB]"I have always like to play with the ball.[LNB]"You have some strikers who wait for one chance in the whole of the game. I am not like this. Obviously there are games when you stand around doing nothing all game and in the end, the ball hits your knee and goes in the net.[LNB]"But that doesn't make me feel happy. I need to feel the ball at my feet.[LNB]"I need to organise things and make things happen. That is what makes me feel like a player.[LNB]"There is a difference between a football player and a goalscorer. For me it is the whole package."