The Spaniard took home the Premier League accolade, the first United goalkeeper to do so since Edwin van der Sar in the 2008-09 season, after his 18th clean sheet in the only bright spot on a night of precious few chances on Thursday.
The shot-stopper was also named in the PFA Team of the Year. "I am really happy for that".
It added to De Gea's fourth Manchester United Player of the Year award he collected this month as Mourinho lauded the Spain global.
Meulensteen was on Sir Alex Ferguson's coaching staff when Manchester United signed De Gea in 2012 and he clearly remembers his early struggles to get used to English football. It means we defended well in this league, I am happy for me and happy for the team.
Courtois won the Golden Glove during Chelsea's Premier League title-triumph in the 2016/17 campaign, having kept a clean sheet 16 times in England's top-flight.
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He also said that if the Premier League was to be more "attractive" this could mean fewer teams. First of all, to share money between the big clubs and small clubs will become a problem.
The Red Devils have conceded 28 Premier League goals and Mourinho echoed De Gea's sentiments.
Manchester United boss Jose Mourinho said David De Gea has been "terrific" after landing a first Golden Glove.
Considering de Gea is among the best goalkeepers in the world, it's been a surprise to see him win the Golden Glove in his seventh season at Old Trafford.
"We are the second best team in the Premier League, a fantastic competition with lots of good teams with six teams trying to finish first", he told the BBC.
West Ham manager David Moyes was happy to draw with his former club. Obviously we are all very happy for David and it is a great team achievement.' He added. It is about clean sheets and they are on the team.