Luke Ayling was a surprise signing by Leeds United last summer, who paid just £750,000 to buy him from Bristol City.
He quickly proved an astute buy, making 42 league starts as Leeds finished in seventh position.
This deal is looked like even better business 12 months on considering the fees Bristol City are demanding for another in demand defensive duo.
Leeds have also been linked to both, but are unlikely to be in for Bryan any longer after they signed Cameron Borthwick-Jackson on loan from Manchester United.
Former Arsenal youngster Luke Ayling was arguably Leeds' most consistent player last season and started off this campaign in excellent form, looking a real threat in their win over Bolton Wanderers with his driving runs forward.
Bristol City appear to have realised their error in letting the talented defender go on the cheap, and are determined not to repeat the outgoing moves this summer, only being willing to deal at big fees, if at all.
Ayling should be worth almost £4 million alone in this market, and Leeds are fortunate to have made the move last summer.
Along with Gaetano Berardi he may go down as the biggest bargain of the now passed Massimo Cellino era.