Here's nine of the relegated sides' players who Boro could save from the drop and bolster their squad in the process...
The 19-year-old is bound to be loaned out by the Blues again in the summer, and his youthful enthusiasm could be a breathe of fresh air for Boro next season.
Leeds United are thought to be hot on the Irish starlet's tail, but the Whites may look for more established talents should they gain promotion this season.
The Wales international was the Millers' standout player last season, and will be bitterly disappointed to plunge into the third tier. He'd provide excellent competition for a spot in Tony Pulis' midfield.
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The nippy winger was Ipswich's best performer in another dismal campaign, and would be a low cost, albeit fairly unexciting signing.
The former Arsenal man is an exceptionally versatile football a highly prized attribute in today's game and would give Boro a fresh option in either defence or midfield.
Will he play every week? Doubtful, but the 35-year-old's experience is invaluable, and he'd be a fantastic leader in the dressing room if not always on the field.
The striker bagged seven goals and made four assists four his side in the 2018/19 campaign, and could offer the Boro some top value firepower upfront.
Beevers looks set to leave Bolton this summer. While he may not be a starter, he'd certainly be a welcome edition to Pulis' squad.
The Everton loanee showed signs of great promise at the Macron Stadium last season, and deserves another season in the Championship to play more first team football.