A big-name managerial appointment such as Frank Lampard might be enough to make Celtic more marketable than Rangers once more.

That is according to finance expert and new Football Insider columnist Kieran Maguire, speaking exclusively at a time when Celtic have been quiet on the commercial front.

Rangers meanwhile have been prolific in securing partnerships in recent weeks and months, signing deals with Bitci, Universal Centre of Sport and Hamburger SV.

The club’s present marketability is coinciding with success on the pitch, with Steven Gerrard’s side 18 points clear of Celtic in the league and still in Europe.

But Maguire highlights the volatile nature of Scottish football and says that the financial pendulum could easily swing back to Celtic after one big appointment.

He told Football Insider correspondent Adam Williams: “It will only take one big victory over Rangers or one high-profile signing or a big-name manager such as Frank Lampard to make Celtic much more marketable.

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“Things in Scotland can turn around fairly rapidly. As we’ve seen, Rangers finished a fair distance behind Celtic in terms of the table last season. I appreciate it was never properly finished but everybody knew that Celtic were the better team last season.

“That’s turned around amazingly this season with Steven Gerrard making Rangers a very formidable team indeed. It can switch from one side to the other very quickly.

“Celtic have an automatic market, they’ve got links with certain places in the US, places in Ireland. So they aren’t less marketable, they are just marketable in different markets and at present, those markets are disaffected with the club.

“But it doesn’t take a long time to turn things around.”

Rangers have the opportunity to win a first Scottish Premiership title in a decade at Celtic Park on March 21 if both sides maintain 100% record before that date.

Neil Lennon resigned as Hoops boss on Wednesday and a club overhaul is widely expected in the summer.

In other news, a top pundit claims Celtic will be gutted to have missed out on a key target over the summer.