Here are some of the latest Boro-related transfer rumours:
James Collins reacts to Cardiff move
Boro were said to be interested in Republic of Ireland stiker James Collins, who instead signed for Championship rivals Cardiff from Luton this week.
The 30-year-old frontman will join up with former Ireland boss Mick McCarthy in South Wales, and says that played a big part in his decision.
"It was a massive factor,” Collins told Cardiff’s website. “Ever since I knew the gaffer was interested in me I wanted to come and play for him.
“He gave me my Ireland debut and I loved working under him. It was definitely a big factor signing for Cardiff.”
Ex-Boro striker set for Premier League move
Another striker who will be on the move this summer is former Boro frontman Ashley Fletcher.
The 25-year-old opted not to sign a new contract at the Riverside but now looks set for a lucrative move.
According to Football Insider, Fletcher has agreed terms on a five-year contract with Premier League new boys Watford.
Fletcher made just 12 Championship appearances for Boro during the 2020/21 season due to injury.
Reported Boro target released
Finally, reported Boro target Kadeem Harris will leave Sheffield Wednesday this summer.
The 27-year-old, who was linked with Boro in March, is one of 10 Wednesday players who will be released following relegation to League One.
Former Boro duo Jordan Rhodes and Adam Reach will also leave Hillsborough.