The midfielder will have everything crossed as he has the knock looked over by the Arsenal medical staff, having only recently looked to have reignited his Arsenal career this season.
Chelsea coach Antonio Conte, meanwhile, who is engulfed in a war of words with Manchester United manager Jose Mourinho, off late, has mentioned that winning the semi-final first leg at home will give his side oodles of confidence.
The England global has endured a career riddled with injury spells - with his first coming as a 17-year-old in 2009 - having fractured his ankle in 2011 followed by numerous setbacks which included more ankle damages as well as a broken fibula in 2015 pre-season.
Chelsea and Arsenal play out their third draw of the season as neither side is able to break the deadlock in the first leg of their EFL Cup semi-final at Stamford Bridge.
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Victor Moses found joy in attacking inexperienced wing-back Ainsley Maitland-Niles down the Arsenal left, with David Ospina grasping a shot at the second attempt as Morata lurked. Chelsea fans turned to gloat and taunt him after each of their goals as Arsenal fell to...
There were more routine saves for both Ospina and Courtois towards the closing stages, and Fabregas also saw a deflected cross strike the outside of the post with two minutes of normal time remaining, but by the end of the match it felt as though both teams could have played on for a while without breaking the deadlock - a far cry from their meeting just seven days ago.
However, the Chile global failed to help the visitors produce a goal and the two sides will meet again in two weeks at the Emirates for the second leg.
Chelsea and Norwich City drew 0-0 in their FA Cup match, triggering a replay.