Joel Campbell says Arsenal midfielder Aaron Ramsey will make Juventus a stronger team.
Ramsey is expected to sign a contract that will see him join Juve as a free agent at the end of the season.
Campbell played alongside the Welshman at Arsenal and believes he has enough talent to improve the Serie A champions.
"If Juventus sign him then they are making a big signing, because Ramsey is a great player and a very good guy," said Campbell.
"He's the archetypal 'box-to-box' player, he can play in every position of the midfield. Juventus would become stronger with him."