Chelsea interim manager Guus Hiddink says attacking midfielder Eden Hazard could be fit to face Arsenal at the Emirates.
The Belgium international will not be in the squad to face Everton on Saturday but will undergo a late fitness test next week to understand if he could play against the Gunners.
Striker Radamel Falcao will also be assessed next week.
"There were no injuries in the last game," Hiddink explained.
"Eden Hazard is still out, although he is on the pitch working. I hope in the upcoming week he will have full training sessions and then we can decide if he can join us for the Arsenal game next weekend.
"We have to be a little bit careful we don't have another setback. He must have some tough, intense training sessions next midweek from Tuesday to Thursday.
"Falcao is out too, we knew that. The rest are okay.
"There is a 12-point difference from fourth place which is a gap. We all like to look forward towards the top of the table, but we also have to be realistic and see we are six points away from the relegation line. That's also a fact.
"We have to work hard and be very concentrated. We have to gather our points to step up. That's why it is a pity West Brom got this 86th-minute equaliser because a win would have helped us a lot in going up the table.
"We were one point off the relegation line [when I took over] but now we have a little bit more room to breathe in.
"We have two very difficult games coming up: Everton who have a very good away record - nine out of 10 of the last away games they got a result – and then Arsenal.
"If you don't gather points you don't know what the others can do. The Premier League can surprise you."