Leeds United reportedly made a valiant attempt to keep Sam Byram at the club.
Pearson had arrived over the summer as an aide to owner Massimo Cellino, and his early work suggested that Leeds were becoming a far more stable outfit thanks to his presence.
Yet shortly after the 1-0 defeat to Ipswich Town last week, Pearson left Elland Road to focus his time and attention on rugby league club Hull FC.
Cellino will now assume many of Pearson's responsibilities, which will include negotiating contract extensions for the current Leeds squad members - including Sam Byram.
The right sided star, 22, has come up through the ranks at Leeds and established himself as a key player either at right back or on the right of midfield, but his contract situation is hanging heavy over him.
Byram's deal at Elland Road expires next summer, meaning he has less than a year left on his contract, and The Mirror report that Arsenal, Everton, Liverpool, Southampton and Swansea are all looking at cut-price January deals for Byram as a result.
Cellino then confirmed to Sky Sports that Byram had rejected a new contract, with many now believing that the youngster's future now lies away from West Yorkshire.
The Yorkshire Evening Post report that before Pearson's exit, he discussed a new contract with Byram and his representatives, in a deal which would have included a release clause allowing him to leave the club if a specific fee was paid by a club.
However, Byram failed to sign that deal, and a divorce between player and club seems inevitable. The only question appears to be whether Byram leaves in January or next summer - much to Leeds' disappointment.