Why?
Look at recent championship strikers when promoted to the prem:
Troy Deeney 21 goals in champ, 13 in prem next season
Ighalo 20 goals in champ, 15 in prem next season
Vardy 16 in champ, 5 in prem (did alright the next season though imo)
Charlie Austin 17 in Champ, 18 in prem next season
Rickie Lambert 27 in Champ, 15 in prem
Danny ings 21 in champ, 11 in prem
Grant Holt 21 in Champ, 15 in prem
Callum Wilson 20 in Champ, 5 in 13 in prem
Andy Carroll did alright also..
For all those you get your Rudy Gestede's, Hernandez, Danny Graham's but the odds seem more the other way to me if anything.
If they're younger & a finisher at Championship level, chances are give them chances & they will deliver at prem level. Certainly given time (which many promoted sides don't get tbf)
He was okay till his move to the Mackems.