Michael Essien could be fit for Chelsea's key Premier League derby against Tottenham at home on Saturday.
The midfielder, 28, had to be helped off during the 3-0 win over West Ham United after pulling up with what appeared to be a left-knee injury.
That sparked concerns as Essien has had serious cartilage and ligament problems in both knees in recent seasons.
But Chelsea said on Tuesday: "Scans show no significant issues in that area."
A club statement added: "Michael had a minor problem with a tendon above his knee during the West Ham game and came off as a precaution.
"We will look at him over the course of this week with regards to his availability for the weekend."
Champions Chelsea play Spurs at 1730 BST on Saturday and must win at Stamford Bridge to keep up the pressure on leaders Manchester United.
United are six points clear of second-placed Blues and both clubs have four games left. They meet at Old Trafford on 8 May.
Tottenham are battling to qualify for the Champions League for a second consecutive season, but are four points behind fourth-placed Manchester City whom they play on 10 May.