Mata, his United and Spain team-mate, believes his strong personality will see him overcome the disappointment and hints that he will be welcomed back into the fold at Old Trafford.
However Mata, with De Gea on international duty ahead of Spain's fixtures with Slovakia and Macedonia, says the keeper is relaxed.
“He seems the same as ever to me," Mata said. "He’s calm, relaxed. He has a naturally calm personality. These have been difficult days but he is ok.
AFP/GETTY
David De Gea arriving for international duty
“It is good for him to be here with the national team too. I think his personality will help. He is always calm.
"Even in moments of maximum pressure or stress he still plays well. His personality will help him on and off the pitch.
“David is professional and he always will be. His desire and professionalism will remain intact. Any team in the world would be better off with him in it.
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