#2 David de Gea (2011 to present)
David de Gea was a fresh-faced 20-year-old when he signed for Manchester United in June 2011 to replace the recently retired, Edwin van der Sar.
Those were huge gloves, for the young Spaniard to fill and he initially struggled to adapt to the intensity of the English game, failing to collect crosses and making some catastrophic errors leading to goals.
However, what was never in question was his unmatched shot-stopping ability and his lanky frame could routinely deny clear goal scoring opportunities.
When de Gea added muscle mass to his tall frame and gained experience, he eliminated the errors from his game and became United's most important player.
de Gea kept goal in United's last ever Premier League winning season in 2012-13 and under the stewardship of Louis van Gaal, added the 2016 FA Cup to his resume and under Jose Mourinho won a Double of 2017 League Cup and 2017 Europa League silverware.
Named as United's player of the year in four of the past five seasons, no player is more vital to the club's long term success than the Spaniard.