With a quarter-final in this year's European competition away to Leinster on the horizon, Croft's return is a major boost to the Tigers and Croft is focusing on his club rugby.
"England have kept in touch with my recovery but playing hasn't come into it," he told BBC Radio Leicester.
"My objective is to get a starting spot at Leicester and get some form back."
"It's great to play for your country but my main priority is playing for Leicester.
"This is the team that has got me to where I am and I need to get back to the game I had before the injury.
"The strength and conditioning staff have got me back in reasonably good nick.
"Hopefully I will get a bit more time next week and get the lungs back.
"Hopefully I'll have some sort of involvement again on Friday whether it's from the start or from the bench and just keep improving my game in terms of fitness and getting back to playing rugby.
"It's been hard over the last couple of months watching Leicester go well in the back row and watching England go well in the back row as well. I was thinking about hanging my boots up!"