The Netherlands international was a key part of Van Gaal’s Oranje side but the talismanic Roma star missed the World Cup due to a knee injury which he suffered in March.
For over £80m we can sit around a table and think about it
Strootman has been heavily linked with a move to United since Van Gaal’s appointment as the Red Devils bid to strengthen their midfield.
The 62-year-old United manager has already snapped up Ander Herrera and has been continuously linked with Juventus star Arturo Vidal.
But Roma manager Garcia attempted to dissuade United from launching a big-money offer for the Netherlands midfielder.
“He’s on the road to a full recovery,” Garcia is quoted as saying by Football Italia.
“A possible sale to Manchester United? What can I say to these rumours? For over £80m we can sit around a table and think about it.”
Strootman, who joined Roma from PSV Eindhoven in 2013, scored five goals and made six assists in 25 Serie A appearances last season.
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