Craig Levein says he is seeking legal advice following his firing as Scotland manager earlier this week.
The Scottish Football Association announced on Monday that Levein was being dismissed and that U21 boss Billy Stark would take temporary charge of the team for the friendly in Luxembourg next week.
They made the move after the Scots began their World Cup qualifying campaign poorly under Levein - they are currently bottom of Group A with just two points from four games.
However, Levein's contract extended until the end of the qualification period and, although the SFA say they will honour his deal, he is clearly unhappy with the process which led to his firing.
A statement has been released on Levein's behalf which read: "I would like to thank everyone who has supported the team during my time as Scotland manager.
"It has been a privilege to have done the job and I would like to thank my back room staff, who have worked tirelessly during my time as manager. Most of all, I would like to thank the players for their unswerving loyalty, effort and professionalism.
'I am extremely disappointed by the process of the last week. I note the position as stated by the Scottish Football Association but do not concur and I am currently taking legal advice as to my options.
'I will make no further comment at this time.'