Dennis Compton I think played football and cricket, Stephen Fry's grandfather CB Fry was an athlete and I think footballer and cricketer too and good at all three.
Ian Botham's son Liam transitioned fairly well from cricket to rugby, whereas Ian transitioned back and forth between cricket and football, first with Yeovil in the late 70's, then Scunthorpe about 5-6 years later and played a smattering of games for both, but never got close to a full season under his belt.
Nicky Byrne made an unsuccessful transition from being a goalkeeper with Leeds to a music industry star. I say unsuccessful because despite the sales that group had, they were still frigging dreadful and an embarrassment to proper music
.
Bolt might do a number at league 2, but perhaps he should set his sights on a midfield dynamo rather than a striker is reports of his heading capabilities should be believed.
Then I ate his Liver.......... with some baked beans and a can of coke.