The Inter Milan midfielder was pursued by the Red Devils throughout the summer.
But Joe Mourinho could not get his man and the Croatian ended up staying at the Serie A side.
And last week he signed a new bumper five-year contract with the club.
The 28-year-old was clearly in celebrating mood against SPAL today.
Video shows Perisic lurking just inside the box as the ball is crossed.
He patiently waits for it to drop as he sorts out his positioning before unleashing a fearsome left-footed volley.
It flies past goalkeeper Alfred Gomis, with the ball hitting the net before he has barely dived.
“What a volley, you could have 3 goalies there and it still wouldn't be saved,” commented one fan.
A disgruntled Man Utd supported added: “Why didn't we just pay the money for him?”
And a third joked: “Didn't want him anyway.”
Inter won the game 2-0 to move joint top with Juventus in Serie A.
