The speedy Manchester City man is set for a race against time to make the Euros.
The former Liverpool man suffered a groin strain in his sides 1-0 defeat to arch rivals Manchester United on Sunday, and further tests have highlighted the severity of the injury.
Sterling's injury is a lot worse than first feared by Manuel Pellegrini and his medical staff. The City manager claimed his young star would be absent for a month, but Sky Sports News HQ are claiming the injury will sideline Sterling for up to 6-8 weeks.
If that timeframe is correct, Sterling could miss the rest of the season for his club, and worryingly for England, he could take a while to regain his full fitness before the Euro's kick off. With Alex Oxlade-Chamberlain already facing a lengthly lay-off, and Theo Walcott out of form, the last thing Roy Hodgson needed was another of his attacking players being ruled out.
The Citizen's will however be boosted by the expected return of key player Kevin De Bruyne after the international break. It is thought he will be available for selection along with Samir Nasri and Fabian Delph in the first week of April, with the trio expected to represent City's U21's during the two-week break from Premier League action.
With David Silva, Jesus Navas and Kelechi Iheanacho amongst City's wealth of attacking talent, Sterling's absence will not be as big a blow by his club as it will his Country.
In other news for City and England fans, Joe Hart is only expected to be out for 2 weeks, with the Champions league quarter-final first leg against Paris Saint-Germain a realistic target.