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Some Manchester United fans have taken to Twitter to discuss their former striker Romelu Lukaku, after the forward found the back of the net in the Milan derby between Inter and AC Milan.

The Red Devils sold the Belgium international back in the summer for a fee of £74m, and Lukaku has shone since teaming up with Antonio Conte at the San Siro.

The 26-year-old has three goals in just four Serie A appearances for the Italian giants, and while Marcus Rashford has struggled of late - two of his three league goals this term have been penalties, whereas he has also missed another spot-kick against Crystal Palace - Lukaku's form has got the United fans on Twitter talking.

One supporter said that the former Chelsea man was the best striker at the club, while another asked someone to remind him why the Premier League giants sold Lukaku.

Let's take a look at some more of the Twitter reaction...