The 22-year old centre-back, who is yet to represent the Oranje, has been impressive since joining the Hoops from FC Groningen in the summer and Mulgrew feels he should be given his chance at international level.
"I'd give Virgil my backing for a World Cup call-up. He's a top player and is still young. He's got plenty of time on his side," the Scotland international said.
"From what I've seen of him and from training with him, he's good enough to be in the Holland squad.
"You could see from day one of his time here that he was a good player and he has got all the attributes.
"He has improved during his eight months here too and is getting better all the time.
"He's a typical Dutch centre-back - really good on the ball and really composed. He makes it look easy at times.
"Is it harder to get a call-up for a country like Holland when you're playing in Scotland? I don't know, maybe it is but I don't know why it should be."
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