Congolese striker Britt Assombalonga is reported to have had a training ground row with Boro boss Tony Pulis.
HITC report that the pair had a serious disagreement at the club’s pre-season training camp in Austria, and the relationship between the two is thought to be seriously strained after the incident.
Naturally, this has led to speculation that Assombalonga could be set to exit the Riverside.
The out and out number 9 has provided a decent return on the investment, scoring 15 goals in 34 starts for Middlesbrough last season.
However, Assombalonga struggled to hold down a regular starting spot in the side ever since the arrival of ex-Baggies boss Tony Pulis.
The fact Pulis was not starting Assombalonga regularly, suggests a distrust and issue between the men, even before the bust up in Austria.
Tony Pulis is certainly the sort of boss who will want to exert control over his players.
He is famed for his no-nonsense approach to management, so whether he can make amends with the front man is questionable.
Pulis may feel if he can recoup the £15m the club spent for the now 25-year-old, and bring in a new front man.
If the two do manage to patch things up, it is unquestionable that Assombalonga possesses the ability to be a real goal scorer for the club.
If he can get a run of games in the side, with Pulis backing him, he could easily return 20 goals in a Championship season.
No matter what the outcome of the bust up, it is unwelcome news to Boro fans, who will want a harmonised squad going into the next campaign.
Middlesbrough missed out in the play-off semi finals to Aston Villa last season, and they will be hoping the club can return to the Premier League this season.