Roy Keane has already tried to make it work with Celtic twice. Like a bad experience on Tinder, the chemistry just wasn't right.
He swiped right in 2006, rocking up as a player for six months after leaving Manchester United. Real Madrid and Everton made him feel loved and wanted. Celtic less so.
A meeting in Dermot Desmond's London lair featured an unusual sales pitch from Gordon Strachan. Keane left the clandestine gathering convinced the Parkhead boss couldn't care less whether they hooked up or not. Unimpressed, he did what Roy Keane does.