Barcelona midfielder Ivan Rakitic was full of praise for Leo Messi after his hat-trick in their Champions League rout of PSV Eindhoven.

Barca were a class above for the 4-0 win.

"That foot is impressive and he has scored another wonderful goal," Rakitic said of Messi.

"I hope he doesn't stop and that many more go in.

"This game was tough for us at first, which is normal since this is the Champions League and it's the first game.

"They were very motivated and they have started their league season well.

"It was a game of good effort, but we can still improve.

"You can always improve and we look at the small details from every match.

"We know we're not 100 percent."