The midfielder is delighted that his teammate is close to a return to action but fears the club becoming overly reliant on the Argentina international
The Argentina international has been absent since suffering a hamstring injury in the win against Real Betis in November.
But the 26-year-old returned to action during an open training session at the club's Minie Estadi training ground Friday and impressed the 12,000 spectators watching with an impressive hat trick in an inter-squad friendly.
"It's a special day for all Barcelona," Fabregas told Barca TV after the match. "Leo is fine, but do not put all the responsibility on him. He has had only two workouts and recovery is gradual. It will help him later.
"We're happy to have him with us."
Barcelona remains top of La Liga on goal difference ahead of second-placed Atletico Madrid and takes on Elche on Sunday in its first game since the winter break.