Newcastle have maintained publicly that Isak isn't for sale, but Liverpool know they are looking for two strikers for a reason. When - or perhaps if - Newcastle do, Liverpool are expected to ramp up their interest with another bid. Sources say the next offer will be a minimum £120m. At the moment, though, it's a waiting game.

Newcastle striker Alexander Isak is desperate to join Liverpool this summer, but the Magpies are refusing to budge on their hefty valuation of the Sweden international

You've probably seen coverage of the Alexander Isak transfer saga, but you are probably far less familiar with a little-known FIFA rule known as Article 17. It could well be the key to unlock Isak's future.