Celtic defender Jason Denayer has told the club's official site that he has a strong bond with Virgil van Dijk on and off the field.
Denayer and van Dijk have formed a commanding centre-back pairing for Ronny Deila's side and their friendship clearly helps.
The pair have got on well since Denayer arrived at Parkhead this summer and the Belgian-born star says that they are in regular contact with each other, even when not at training.
“We are very close on the training ground and off the pitch so we speak a lot together," he said. "In Gran Canaria we found a handshake and the two of us also like basketball so the celebration is from that."
The fact that the defensive duo are so close may mean that Celtic's chances of re-signing Denayer on loan from Manchester City rely on them keeping Van Dijk.
The Glasgow Evening Times claims Celtic are hoping to persuade Denayer into a second spell at Parkhead next term, but without his close friend and centre-back partner the move could be less appealing for the 19-year-old.
Van Dijk has been linked with the likes of Tottenham Hotspur and Arsenal in London24 and the Bhoys face a fight to keep him, but Ronny Deila has an exciting project developing at the club currently.
Celtic have improved considerably throughout the season and they look in with a chance of winning the domestic treble.
That success and the chance of performing in the Champions League could help persuade van Dijk to stay and that could be doubly good news, if that helps convince Denayer to come back too.