Manchester United continue to be linked with a move for a striker, with the latest in that category coming in the shape of Everton forward Romelu Lukaku.

Social media went crazy after Memphis Depay, the new Manchester United signing, and someone who seems to love hanging around with some of the best young footballers in the world, who are not exactly from Manchester United, posted a picture on Instagram.

In the picture, Depay and Lukaku are seen having a conversation, with writing below the post from Depay: "Me and @romelulukakubolingoli10 in an conversation. See you soon B."

Now, that could mean anything and absolutely nothing, but considering the nature of social networking and its role in creating transfer rumours at the moment, obviously it was taken as a hint by Depay that Lukaku could move to Old Trafford this summer.

Those whispers grew into normal noise after Sky Bet slashed the odds of Lukaku joining Manchester United from Everton this summer from 6/1 to 7/4, according to the Metro.

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Of course, that might just be a natural consequence of the punters reading a little too much into the Instagram post and deciding to make a bet on Lukaku signing for Manchester United, but either way it is just more fodder for the transfer story.

Louis Van Gaal definitely could use a central striker this summer, even if he has insisted Wayne Rooney will play in the role in the new season.

Having let go of Robin Van Persie and Radamel Falcao, Manchester United are a little short on the central striking department, with the backups currently for Rooney being Javier Hernandez and James Wilson.

Lukaku only moved to Everton a year ago from Chelsea for a club record fee of £28million, and tempting Roberto Martinez to sell the Belgium international striker will be a tall order.

Everton are already a little peeved at Chelsea trying to sign John Stones this summer, and the last thing the Merseyside club will want is to see another talented youngster seeing his head turned at the prospect of a big move.

Lukaku failed to fully justify the £28m pricetag last season, struggling for consistency and goals, and the jury is still out on how good a striker he really is.

There is no doubting the talent, however, and maybe playing in front of a crowd of more than 70,000 fans is what the 22-year-old needs to get his groove back.

Lukaku, however, will not come cheap, and spending what will be easily over £35million – considering Everton paid £28m – will be considered a bit of a risk.

But then, one problem that Manchester United do not have is worrying about money.