So the MU chief exec goes back on 'urgent transfer business' and Mourinho has stated that it's Rooney or nothing (with no players going the other way).
I think Rooney would be a very good signing for Chelsea tbh. He gives you insurance on the number 9 position because you know that he should bang in a good number of goals over the season, but his ability to play behind the striker or even out wide (especially in a 433) means that he won't necessarily hamper the development of Lukaku. Lukaku can still be played up top on a regular basis with Rooney dropping behind to give Mata a rest, thus reducing the pressure on him because lets face it, while Oscar etc...have great potential and ability, I wouldn't feel comfortable actually relying upon them to play that role against decent opposition.
Likewise Lukaku is still young, and if he were first choice, even if he did live up to expectations, he will inevitably go off the boil at some point because he's still developing. While Chelsea don't necessarily rely on a striker to score 30 goals a season, a decent striker is still needed, and I'm not convinced that either has the quality on a consistent basis.
One of Torres and Ba do need to go though, none of them will be happy on the bench 95% of the time.