Capello took the 22-year-old Liverpool centre-forward aside at the England camp to discuss the reputation he has quickly acquired as a hard-drinking party animal and the Italian was reluctant to shower praise on the striker, even after his goalscoring display last night against Ghana.
"Carroll scored a goal but needs more time to improve," said the England manager. "He can improve a lot. He's a really important player and it's important for the striker to score a goal.
"I remember him before he suffered injury problems. He ran around a lot and would always fight. With the bigger players, it's impossible to improve really quickly, like Aaron Lennon and Jack Wilshere."
Asked if Carroll would be allowed to celebrate his first England goal with a beer, Capello replied: "This is a question for Kenny Dalglish."