Marcus Smart, the No. 6 overall pick in the 2014 draft, has become a vital part of this Celtic group thanks to his work on the defensive end.
The 55-year-old signs a 12-month rolling contract, replacing the permanent void left by Neil Lennon's resignation in late February.
Rangers won the Scottish Premier League without losing a single game. Here we look at other notable teams who achieved a similar feat.
Conor McGregor has been in the news lately, but not due to his exploits in the UFC. Instead, it's about his interest in football clubs.