
Darren Fletcher appears to have immediately brought 4-2-3-1 back to Manchester United after succeeding Ruben Amorim on a temporary basis.
A factor in Amorim’s dismissal was the reported belief from the club’s senior leadership there had been “a lack of evolution and progress” under his tutelage over 14 months in the job—the Portuguese tried hard to implement a 3-4-2-1 system with limited success.