Midfielders George Thorne and Jeff Hendrick, and forward Chris Martin have been training with the rest of the squad and could feature in the Championship clash against the Hornets at the iPro Stadium.
This will be huge news for the Derby fans and will certainly fill them with more optimism for the coming weeks.
The return to fitness of star striker Martin especially could prove to be hugely important for the Rams.
The 26-year-old is arguably the best striker in the Derby squad and has scored 16 goals in 30 Championship appearances so far this season.
Martin has created 47 chances in those matches, while having a pass accuracy of 72% and a shot accuracy of 56%.
Derby are currently fifth in the Championship table with 67 points from 39 matches, six points behind leaders Bournemouth and just one ahead of Brentford, who are seventh.