The 28-year-old's loan move was met with both hope and skepticism by Blades fans, while the Derby faithful were largely unmoved by his departure.
@SUFC_tweets hmmm not fussed about that one but will give him the chance— Dane (@Daneshaw8) July 25, 2015
Remember when everyone slagged Done off when he signed.. give Sammon a chance before ya slag him off #sufc— Millie (@sufcmill_) July 25, 2015
Great that Sammon has gone, utterly dreadful striker. Waste of 3 years wages and fee, he just wasn't good enough! All the best though! #dcfc— Shane Milburn (@Sheepshufter) July 25, 2015
The Republic of Ireland international may not be revered for his finesse on the ball or finishing, but he is a player that gives 100 percent every time he steps out on the pitch.
In his time at Derby, especially in recent years, he has struggled with having the crowd on his back before he's even touched a ball. Nevertheless, he continues to make himself available and doesn't shy away from the challenge when asked.
It's fair to say the Rams have moved on from Sammon, with Chris Martin, Darren Bent and Andreas Weimann all ahead of him for selection, but he has a chance to once again prove himself at Sheffield United.
The Blades faithful may have to be patient with the former Wigan Athletic forward, but he will no doubt win some fans over with his endeavour from day one.