It's been five years to the day since Sir Alex Ferguson signed David de Gea from Atletico Madrid to replace the brilliant Edwin van der Sar as Manchester United's number one.

A deal was agreed with the La Liga outfit, bringing De Gea to Manchester in a deal around £17.8million which was completed after his success with Spain in the 2011 U21 European Championships.

After a shaky start to his United career, the Spaniard is now regarded as one of the best goalkeepers in the world. As a result of his outstanding transformation at Old Trafford, De Gea has replaced Real Madrid legend and current Porto keeper Iker Casillas as Spain's number one, featuring in all of the national sides fixtures at the European Championships in France. 

His efforts in Manchester haven't gone unnoticed, and his hat-trick of Sir Matt Busby Player of the Year awards in 2014, 2015 and 2016 can justify how much the United faithful enjoy watching him play. No other United player has ever picked up this accolade on three different occasions, as these are just a small number of individual awards that de Gea has picked up thus far in his Old Trafford career.

80 clean sheets and counting

The 25-year-old has also been branded as one of the world's best shot-stoppers and after five season's, he is already seventh on the club’s all-time goalkeeping clean sheets list with 80 to his name. 

The United fans have a lot to thank for as the Spanish stopper has produced some remarkable performances with some world class saves which United fans will never forget. Here are just a number of his best saves:

Chelsea (Juan Mata) February 2012

It's a fixture that always means so much to both sets of supporters and once again it didn't disappoint in entertainment. With 50 minutes on the clock, Chelsea had a comfortable 3-0 lead, but if you knew United, you know they couldn't be ruled out of the fixture. Two penalties from Wayne Rooney and a late Javier Hernandez header produced a remarkable comeback for the visitors, but the chances didn't stop there.

Juan Mata had the chance from a free-kick in the 90th minute to get the winner, but De Gea somehow reached across goal to strongly palm away the ball with his right hand to keep the scores level. This is a save that has been regarded by the man himself as his best ever save for United.

De Gea in full motion to deny Mata's freekick | Photo: IrishMirror.ie
De Gea in full motion to deny Mata's freekick | Photo: IrishMirror.ie

Everton (Bryan Oviedo) October 2013

This fixture between United and Everton was arguably one of De Gea's best ever performances in a United shirt. The Reds won the game 2-1 but had their goalkeeper to thank. A first-half penalty save from Leighton Baines - the first spot-kick he has failed to score in his career was followed up by a brilliant left hand save from a powerful Leon Osman shot.

However, it was the save from Oviedo at the end of the game that was the best. After a pile-up in the 18-yard-box, the ball fell to the full-back who fired towards the United goal, only for De Gea to tip the ball over the bar, despite not seeing it till late due to a deflection.

Sunderland (Emanuele Giaccherini) October 2013

In a 2-1 away win at Sunderland, the shotstopper denied Emanuele Giaccherini from scoring which left United legend Peter Schmeichel claiming that it was the best save he has ever seen in the Premier League. The Italian found himself in plenty of room to fire a header towards the United goal, but the goalkeeper produced a wonderful right handed camera save to deny Sunderland a goal. 

Liverpool (Luis Suarez) March 2014

Despite suffering a 3-0 defeat to their biggest rivals, De Gea's save to deny Suarez was credited as the save of the season by the Premier League. The striker managed to power through one on one and had a huge chance to add more misery to United. However, the Spaniard got down very well and managed to punch away Suarez's powerful right foot strike. 

Everton (Romelu Lukaku) April 2016

It was the FA Cup semi-final, and United were leading 1-0. However, after continued pressure and momentum building, Everton were awarded a penalty after Timothy Fosu-Mensah brought down Ross Barkley. Lukaku stepped up to give the Toffees a chance to level, but De Gea's strong right-handed save denied the Belgium striker as United went on to win the game 2-1.

De Gea has been a huge fan favourite at Manchester United and after a memorable five years at the club, he always seems to be rumoured with a move to Real Madrid this summer. However, having said that he wants to work with Jose Mourinho, it looks like De Gea will have plenty more opportunities to wow the United fans with some impressive saves.