Former Juventus coach Fabio Capello says they must buy big this summer.

Capello feels Juve must be a major player in the summer market.

He told La Gazzetta dello Sport: "At least four (signings needed), but of a first level. They will have to be agreed between the coach and the club. The coach must have a say in the signings."

On Juve's interest in Atalanta midfielder Koopmeiners, Capello added: "Nice player, but he needs to be tested with a heavy shirt like that of Juventus.

"The Bianconeri, however, will need at least two quality midfielders. Then a full-back and a striker or a winger who skips the man and creates numerical superiority."