Leeds United are eyeing up a player from Sheffield United for signing number four of the summer. The Whites are slowly but surely easing themselves into the transfer market at the moment and have so far made three new additions. Joe Rodon became the first to come through the doors at Elland Road as he returned to Leeds as part of the deal that took Archie Gray to Tottenham Hotspur. Alex Cairns then followed earlier this week to replace Kristoffer Klaesson as Leeds’ third choice goalkeeper, nine years on from leaving the club as a 22-year-old. A season-long-loan deal for Joe Rothwell from Bourn…