Brentford now look set to make a new bid for Celtic defender Kristoffer Ajer, according to Football Insider.

The Lowdown: Ajer not happy; Celtic sticking to their guns

Ajer has made it clear this summer that he wants to leave the club, however, the Hoops haven’t made it easy.

Norwich and Bayer Leverkusen had offers in the region of £10m turned down, whereas Brentford saw a bid which could’ve totalled to £15m rejected.

The 23-year-old was left furious at the situation earlier this week after a new £20m valuation emerged, but it seems as if the Bees haven't given up hope of signing the Norwegian just yet.

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The Latest: Source shares update

According to Football Insider, Brentford are returning with a new offer for Ajer.

A £15m bid will include a higher guaranteed payment, with this story coming after Celtic agreed on a deal with Rubin Kazan for centre-back Carl Starfelt.

You'd expect Starfelt could well end up replacing Ajer, should both moves officially go through.

The Verdict: McKay seems to have worked his magic

With no director of football in place yet, CEO Dominic McKay will of course be at the heart of discussions regarding Ajer’s Parkhead future.

The club have rejected three bids, two of which were worth £10m and another worth an initial £12m.

Should they now accept a fee closer to an initial £15m, McKay seems to have worked his magic by getting more than those three figures upfront, allowing cash to be invested towards the likes of Starfelt.

Of course, the Hoops may still decide to turn the new Bees bid down once again, but McKay is continuing to get clubs to increase their bids closer to the club’s demands.

Remember, Ajer is into the final year of his Celtic deal, so it's a risky game to play by McKay, but one which could come with a huge pay-off if Brentford and others get desperate.

In other news: Celtic now want to sign £6.3m-rated defender as well as Starfelt; talks already opened.