Petrucci has signed with the Belgians on-loan.
"He's an extremely gifted football player," enthused Hasselbaink on MUTV. "He's a good midfield player, highly technical, who played his first match for 70 minutes and did really well. He's going to be a big asset to our team.
"I'd seen lots of DVDs about him and seen how he plays and how he likes to play. I spoke to him before he came here and I spoke to Warren Joyce about him on several occasions.
"He is my type of player - a creative midfielder who can release the ball for the strikers and create something for himself as well. I like those kind of players."
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