Jewell named Caleb Folan ahead of Aghahowa in the line-up in the 1-1 draw with Watford last night.
He said: “I preferred Caleb to Julius Aghahowa, but I did not lose any sleep over that decision.
“Julius will be a good player for us, but it is difficult to adapt to the Premiership in a short space of time, because the pace is so quick.”