McDermott was in charge at Leeds for 13 months, before Massimo Cellino sacked him in May 2014.
The Reading boss felt that he was building for the future at Elland Road, but was unable to implement all his ideas as Cellino was too impatient.
And McDermott has suggested that he is not surprised the Yorkshire side have continued to struggle in his absence, as they simply do not give managers long enough.
“I was very lucky to be in charge for 50-odd games,” he said. “It’s a shame I never had the chance to build something, but that’s the problem at Leeds. Nobody gets to lay down foundations and plan for the next level.”
Leeds fans have now began to protest against owner Massimo Cellino, partly due to his trigger-happy approach to appointing managers.
Cellino has offered Evans a vote of confidence recently, but Leeds’ form has been disappointing poor of late.
The Whites have won just one of their last 11 matches, and they are stuck down in 18th place in the Championship table.