​Juventus winger Douglas Costa has admitted that he had doubts whether Cristiano Ronaldo's arrival could unsettle things in Turin, but has revealed that the "five-time Ballon d'Or winner has won everyone over with his attitude."

Ronaldo shocked the footballing world after he decided to end his nine-year trophy laden spell with ​Real Madrid and join Juventus earlier in the summer, but he has dispelled any uncertainty over the move by settling in nicely at Turin.

The 34-year-old once again showed the world why he is one of the greatest in the history of the sport, netting a hat-trick against Atletico Madrid to help his side qualify for the quarter-finals of the Champions League.

Costa has now revealed that he had doubts over Ronaldo's arrival but the Portugese has won the dressing room over with his attitude.

"Believe it or not but when Cristiano Ronaldo's arrival was being talked about, I asked 'what will the dressing room be like? We all have to love each other as team-mates because we're all looking for a place in the team - but Cristiano won everyone over very quickly," Costa said as ​quoted by Goal.

"He's a simple, hardworking guy who likes to win. Juventus were looking for a player with his mentality, so he's given us a lot. When he arrived. I thought 'the best player in the world has joined, right?'. As soon as he arrived, the club improved in every aspect. His contribution has been noticeable."

"He scores goals every week, he’s brought more fans to the stadium and we hope to win things with him so we make history with him by our side. He's a stand-up guy, he's hard-working and he's always with us." 

Juventus will face Ajax in the quarter-finals of the Champions League and will next be seen in action against Genoa on Sunday, the 17th of March.