They won't ask Davina as she is associated with Popstars The Rivals which didn't do too well - ratings wise however obviously what it produced 'Girls Aloud' turned out to be a gigantic success story,
Caroline Flack is the only person for the job for me. Vibrant, liked and a huge personality. NO OLLY. It'll just turn in to the awkward mess that was XF USA. I think we could see Holly Williboughy as a surprise choice although she is heavily associated with Dancing on Ice. Olly would be HEAVILY criticised in the media for his inexperience and thus would result in a decline in his music career thus Cowell won't take that chance. Philip Scofield is too old.
Cowell loves Ant and Dec, i could see that happening. But seriously NO ONE else. No Vernon - Tess comparisons. Reggie, Zoe, Claudia and Emma Willis are now associated with The Voice/Strictly.
Who i would hire in order of preference and who i think Cowell will hire
1. Caroline Flack ON HER OWN
2. Ant and Dec (Cowell knows Britain loves them)
3. Hollie Williboughy (Well liked, previous XF)
4. Ben Shepard (Cowell likes him)
5. Stephen Mulhern (He sings his praises on BGT)
6. Nick Grimshaw (If he is allowed under contract with the BBC)
7. Jameela Jamil (Random but would work..)
8. Davina McCall (associated with Popstars but still would be brilliant)
I really cannot see anyone apart from the names i have mentioned suiting it.