Will think about it later. Do you mean literally with flowers named after them? or just happen to have the same name as a flower?
a bit of both, so i,ll give you Dennis Violet for a start, As i,m feeling generous, there is Bobby Charlton apparently a rose was named after him ,so there is one more!
Thought that would have been a gimme with flower in the name though theres a rose called "little Jackie minature rose" http://forums.gardenweb.com/forums/load/rosesmin/msg0112565929490.html also George best has a rose named after him
There was a Tom Jones that played for Man U http://en.wikipedia.org/wiki/Tom_Jones_(footballer_born_1899)