"Robbo is doing fantastic. Obviously when I came to Celtic, in my first season he played at Dundee United and I already thought he's a very good player and I thought at that time he should join Celtic!" Van Dijk said.
“I think I said it to one of the scouting guys as well - sometimes I like to give my opinion on players. He's just a great player, [he] works hard.
“If you need ratings of a game, I don't think he'd ever go lower than a six.
“You can trust him and the connection I have with him is getting better every game.
“He knows obviously what he has in me, and I get it the other way around as well.
"He's a good guy as well and that obviously helps too."