Middlesbrough face fight over four influential figures including Ghana star Albert Adomah after missing out on promotion.
The future of manager Aitor Karanka is being cast into doubt - with sides in the English top-flight and in Spain showing interest.
Adomah and Ben Gibson  are wanted by Premier League sides and Patrick Bamford is likely to head elsewhere for his next loan move.
The Ghanaian international played an influential role for Boro despite the inability to qualify to the Premier League.
It's been reported Norwich and Crystal Palace are keen on the services of the 27-year-old, who has earned a call-up into Ghana's national team ahead of the 2017 Africa Cup of Nations qualifier against Mauritius on June 14.