Chelsea's former assistant manager Ray Wilkins is to take legal advice following his departure from Stamford Bridge.
The ex-England international left the club nine days ago after being told his contract would not be renewed.
But in a statement released by the League Managers Association, Wilkins said:"I'm very disappointed that the board decided that I had no further contribution to make at Chelsea Football Club which has played such a huge part in my life.
"Since rejoining the club, I am extremely proud to have assisted in Chelsea's recent successes.
"I enjoyed a fantastic relationship with the staff, players and the supporters and I now wish them all the very best for the future.
"The LMA's legal advisors are assisting me in obtaining answers to a number of questions arising from my undoubtedly unfair dismissal, and all efforts are being made to reach an amicable solution. I therefore will be making no further comment at this stage."