I think Clarke did a good job of taking the most shambolic international setup I have seen in my lifetime and turning back into a team that could at least qualify for finals again. Even if the process wasn't pretty at times.
However, both finals severely exposed his limitations as a manager. I was willing to cut him some slack after the first one, but the most recent performance at the Euros proved not only had he not learned anything, but had actually regressed. The game against Hungary summed it up perfectly - a must-win game with zero shots on target.
I don't see any improvement while he his still in charge.
Congrats to Wilson, though - well deserved based on his recent performances.