Manchester City manager Mark Hughes expects Brazilian striker Jo to return a better player once his loan deal with Everton expires at the end of the season.
Signed for Â£17million from CSKA Moscow last summer, the 21-year-old failed to make any impression in his first few months at Eastlands before making a loan move to Goodison Park.
"The reason I allowed him to go was that I felt he wasn't going to get a chance to play here this season," said Hughes.
"What the lad needs is Premier League football. I expect him to get better and develop in terms of what is required to play in the Premier League.
"It is much more physical and intense than he is used to and I think that probably took him aback. He struggled to cope with it.
"Most attack-minded players find it hard to come to the Premier League and hit the ground running. Andrey Arshavin is the same at Arsenal.
"The Premier League is just so much more intense than anywhere else."
Meanwhile, Craig Bellamy could make a surprise comeback in Thursday's UEFA Cup tie with Aalborg.
"Craig will be in the squad and might be an option for us," said Hughes.
"We are going to take him with us and see how he reacts.
"It is probably a bit soon for this week but we will definitely look to have him involved at the weekend."
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