Marouane Fellaini, £27.5m Although stigmatised by the incompetence of David Moyes and that amateurish 2013 summer transfer window, Fellaini was a decent player for United and gained the trust of every full-time manager he played under.
Scored in three semi-finals en route to final victories and started the 2016 FA Cup and 2017 Europa League finals. Pivotal in United's best performance at Anfield in the last 20 years.
6 Juan Mata, £37.1m Will be fondly remembered for his 'Juanfield' brace and derby winner. Enjoyed vibrant spells under Louis van Gaal and Jose Mourinho but has struggled to establish himself as a first-teamer since Van Gaal was sacked.
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