The 33-year-old completed a loan move to Old Trafford on deadline day, following Ajax winger Antony through the door after a busy 24 hours for Erik ten Hag.
While de Gea was again trusted to be the club’s first-choice option between the sticks following the decision to loan Dean Henderson to Nottingham Forest, the Spanish international has come under yet more criticism this season.
Speaking to United’s official website, Dubravka said: “To be joining Manchester United is a special moment in my career and I can’t wait to get started, and help the group achieve its ambitions.
“I am joining an excellent group of goalkeepers with lots of experience in the Premier League, and I know that we will push and support each other to keep our standards at the highest levels.
“The chance to work with David De Gea, alongside Tom Heaton, is one that I am relishing.”