It has since been claimed that Boro are investigating Monk for the signings which took place during his tenure at the Riverside in 2017, in particular Cyrus Christie, Ashley Fletcher, Ryan Shotton and Marvin Johnson. We take a look at the players who joined Boro under Monk and what has happened to them since:
1. Jonny Howson
After a slow start to his Boro career, Howson was one of the club's most consistent performers last season, featuring in every Championship game. He also played in a variety of positions including right wing-back. Photo: Alex Livesey
2. Martin Braithwaite
After falling out with Monk's successor Tony Pulis, Braithwaite appears to be back in favour under new head coach Jonathan Woodgate. It remains unclear if he'll stay at the club this summer though. Photo: Bruce Rollinson
3. Darren Randolph
By far Boro's best performer last campaign, Randolph was even named in the Championship Team of the Season after his consistent performances last term. Photo: Clive Mason
4. George Miller
The striker made just one first-team appearance for Boro following his transfer from Bury in 2017. Following loan moves to Wrexham, Bury and Bradford City, Miller signed for Barnsley in January 2019, before being loaned back out to Branford last season Photo: George Wood