One thing that made Portuguese captain, Cristiano Ronaldo join Juventus.
Ronaldo, who is Madrid’s all-time leading scorer, sensationally swapped the Champions League holders for Juve last month.
According to Costa, Ronaldo joined Juve because the 33-year-old wanted to take another step to enhance his status.
He, however, believes the five-time Ballon d’Or winner can take the Old Lady to the next level in their pursuit of European glory.
“I think Ronaldo was already at a high level, but he really wanted to take another step to enhance his status,” Costa told Italian Football TV.
“I think CR7 has everything to take us to the next level and do important things this season.
“Ronaldo is a really important player, but we also have Dybala and other important players. I’ve played with Neymar, so it’s not totally new for me to play with someone at [Ronaldo’s] level.
“Everyone has welcomed him and we know how much he can improve us. We can’t hide it, it’s clear.”