James Mortimer 11.Apr.2012Getty Images
The Victorian based franchise is suffering a prop crisis and Hill rang Somerville - now enjoying retirement in New Zealand - to see if he would suit up temporarily to assist the Rebels.
Somerville was a foundation member of the newest Investec Super Rugby franchise, and played his last test match in 2008 against the Wallabies.
Laurie Week injured his shoulder in the Rebels shock win over the Blues, while backup Paul Alo-Emile has ankle issues so there is no front line back up to Rodney Blake.
The multiple Super Rugby title winner initially said it was not likely he would play, before confirming to Hill there was zero chance.
The Rebels confirmed they would be seeking replacement options, with former Sydney University mentor Hill not wanting to go down the road of golden oldies at the scrums.
"We are looking at all of our options. We are in discussions with the ARU (Australian Rugby Union) to get a player here in time to play the Brumbies," Hill said.
"I would be reluctant to put the team in a position where we would have to play uncontested scrums (If Blake was injured)," Hill said.
"It's not in the spirit of the game."