If Chelsea offered us enough and we had a ready use for the money i think we'd consider it. PSG would be more to our liking of course.
It's all well and good people saying he'll stay but that is not a sentiment without cost, 25-37 million or so at current levels [assuming either an additional two or three years on the existing terms].
After seeing the difference signing Van Persie was to our campaign compared to City and Chelsea's do you really think we'd sell Rooney to either of them. It's be handing over the edge. No chance. He stays or he goes abroad. My money is on Madrid.