George Furbank: England full-back a doubt for Six Nations opener
Steward’s golfing ability was favored by Borthwick Lost to South Africa on November 29-20 The Leicester man is the most likely candidate to fill in at Firbank again at Test level.
Firbank’s absence will be keenly felt by the Saints, who will hope victory in Pretoria can kick-start their form as their Premier League title defense falters.
They sit eighth with three wins in seven games ahead of Sunday’s trip to Saracens.
“It’s a huge loss, he was a great rugby player,” Firbank’s Vesti added.
“He is the captain of our club and has really grown into a leadership role over the last few years. He will be a bust.
“His ability to fight back, his ability to make other people look really good, his calmness, those are really strong qualities in George that have allowed him to make great strides.”