Manchester United goalkeeper De Gea has been linked with a move to Spanish giants Madrid in the summer transfer window.
According to Sky Sports, Los Blancos expect to sign the Spain international, despite United offering him a pay rise to remain at Old Trafford.
Clement, who worked as a first-team coach under the now departed Carlo Ancelotti for the past two years at Madrid, believes that De Gea would be a good signing for the 10-time European champions.
“I wasn’t privy to any of those conversations,” the Englishman told The Sun. “But De Gea’s a good goalkeeper, he’s from Madrid and Casillas is coming towards the end of his career.
“He’s still only 34, that’s true and he's a legend at the club. But Real have to make a decision.
“Every year it seems to happen in Madrid. It happened last year as well — Casillas or Lopez. And now it’s Casillas or are we bringing in De Gea? He continues to stay there.”
De Gea is one of the best goalkeepers on the planet and is a world-class player - he would be a huge success at Madrid.
The former Atletico Madrid star was arguably the best player for United in the recently concluded 2014-15 season.
The 24-year-old kept 11 clean sheets in 37 league appearances, while making 2.11 saves per game and 2.17 saves per goal on average.