10. Dean Henderson (GK) - Sheffield United
Admittedly, perhaps not the most immediate hole that needs plugging in the Newcastle ship when one considers the quality, and fan favourite status, of Martin Dubravka. But some high profile mistakes for the Slovakian stopper this season have perhaps opened a sliver of doubt about his ability to step up to the next level with the club.
Newcastle could do a lot worse than to use their new-found wealth to test the resolve of Manchester United by lobbing in a bid for their promising young keeper. Dean Henderson has been immense on loan at Sheffield United this season. A calming presence at the back with all the shot stopping abilities of Dubravka to boot, Henderson would be the perfect keeper to allow Newcastle to develop a new, more attacking style ahead of.
Henderson is familiar with a more attacking game from his time at Sheffield and a more comforting presence around his box than the occasionally erratic Dubravka. With Madrid's interest in De Gea seemingly waning, it may be the perfect time for a club to snatch up Henderson on a permanent deal. No doubt other clubs will be circling soon.