Mumbai, March 10 (IANS) Choreographer Ahmed Khan was all set to guide Hrithik Roshan through an item song for his father's film 'Krazzy 4', but there's a problem.

Because of Hrithik's knee problem his version of the item song has been pushed from February into March and the dates are clashing with Shahid Kapur.

'The dates are clashing with the song that I've to do with Shahid Kapur for Ken Ghosh's film. The dates were firmed in long ago and I don't know what to do,' Khan told IANS.

'Shahid is not just my buddy, he is like my brother. Besides, the song requires a lot of special effects. It's a complicated number. There's no way I can disappoint him,' added Khan who is also wrapping up the production work for 'Pathshala' featuring a cast of phenomenally talented child actors.

But now Khan needs to find a way out of the deadlock regarding Hrithik's item song.

'We're trying to work out a solution. However, if all fails then there's no choice, I'll have to go with Shahid. Hrithik will have to get another choreographer,' said Khan who choreographed Shah Rukh Khan's item song for 'Krazzy 4'.

Ironically, at a time when Khan is taking his job as a filmmaker so seriously, he's suddenly much in demand as a choreographer. In fact, he has just choreographed a huge number with Aamir Khan in 'Gajini'.

'With his newly-acquired muscles and toned body, Aamir's dance movements are phenomenal. The way he moves has to be seen to be believed,' said Khan.