The 22-year-old arrived in Manchester last summer with a big reputation after bursting onto the scene as a teenage sensation with PSV Eindhoven in the Eredivisie.
However, since then the Netherlands international has failed to make any impact at Old Trafford and looks set to be offloaded by Mourinho in the upcoming transfer window.
Depay could be part of a United exodus after reports suggesting that Mourinho is looking to sell eight players from his first team squad in January.
Depay, who has only scored two Premier League goals for United, came on as a second half substitute in the Netherlands 1-1 draw with Belgium in Amsterdam last night with Koeman watching on from the stands.
The former Barcelona defender has previously claimed that he attempted sign Depay during his time in charge at Southampton, prior to the winger's move to Manchester United in 2015.
“We tried to bring him to Southampton but he wanted to stay for one more year at PSV," he recalled.
“When United went in for him this summer, we knew at Saints that we had no chance. When they come, we have no chance."
It is also rumoured that Fenerbahce and Roma could be tempted into coming for the tricky forward.
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