Manchester United striker Romelu Lukaku knows they face a massive test for their Champions League double header with Juventus.

United and Juve meet home and away in the coming weeks.

“Juve have a great project in place and they just keep going. Every year they try to get stronger," Lukaku told La Gazzetta dello Sport.

“Without doubt, Juve are one of the two-three best teams in Europe. They've got a great coach on the bench and extraordinary players in every area of the team.

“Cristiano Ronaldo stands out, but watch out for the others too. Paulo Dybala is already impressive and getting stronger, while I love Douglas Costa. He's an exceptional signing and his career shows he always makes the difference.

“It's a tough group, but obviously Manchester United want to finish on top."