The Blaugrana star extended his deal at the club until 2018 on Thursday, and the Spain left back heralded his Camp Nou teammate as being on the road to becoming the greatest player of all-time.
"I can’t imagine what Messi will be like in 2018, but it’s great news for Barca fans that he’s staying," Alba told the club’s official website. "He is the best player in the world and as long as nothing happens, he’ll be the best ever. We’ll try to make him feel as comfortable here as we can.
"I was once unlucky enough to have to face him as an opponent, but now I’m here I’m delighted to have him as a teammate. I have never seen anybody capable of doing the things that he can do."