Former Manchester Uinted captain Rooney said that it is "possible" that he has played his final game, having left himself out of the squad to take control as caretaker boss.
Bloomfield, however, punished Derby's second-half wastefulness and inability to clear danger in the 80th minute, poking home an equaliser that leaves Derby bottom of the table.
Rooney said afterwards, "I felt the experience coming into the team was vital, I wanted experienced players on the pitch who know the league and to try and get the ball forward quicker than we have done in recent games.
"I think that was needed today. I can sit here and say we want to play football, make 600, 700 passes a game, but at the minute the players aren't in that frame of mind and aren't confident enough to do that so the important thing for me was to try and simplify the game for the players and to get the ball forward.
"We paid the price for not getting that second goal. But I have to remain positive, it's a point, we've stopped the run of losing games and it's a point we have to build on."