Chelsea Fc play perhaps their biggest match of the season so far this evening with Barcelona the visitors to Stamford Bridge for a UEFA Champions league fixture.

The west Londoners are currently on seven points ahead of matchday five, after two home wins against Benfica and Ajax, and a draw in Azerbaijan with Qarabag. Their only defeat thus far has come away at Bayern Munich.

Enzo Maresca rested some key players for the win over Burnley on Saturday afternoon, so right now the head coach's squad looks in good shape. With that being said, Julisha takes a look at the XI Maresca might field this evening at Stamford Bridge:

Robert Sanchez ; The 28-year-old has been Chelsea's starting goalkeeper in three of the four Champions League games so far this season. It is difficult to see a world where Filip Jorgensen starts instead of Sanchez given the opposition and the magnitude of the game.

Malo Gusto ; Came on for the final 20-or-so minutes at the weekend to help see out the game. Gusto, who has been in fine form this season, could start at right-back where he is likely to be up against the dangerous Raphinha.

Wesley Fofana ; Left out of the squad for the trip to Burnley over the weekend, and given there is no injury, one would assume there is a high chance Fofana will be involved versus Barca. The Frenchman has looked a lot better in recent appearances after taking a while to get going this season.

Trevoh Chalobah ; A staple in Maresca's XI at the start of this season. Chalobah and Fofana have shown signs in recent games of forming a solid defensive partnership for the Blues - and they will need to show just that tonight against a dangerous opposition attacking line.

Marc Cucurella ; The Spaniard seems to be relishing the chance to directly come up against one of the world’s best in Lamine Yamal, who is also his international colleague.

Reece James ; James was taken off at half-time at Turf Moor on Saturday, perhaps with an eye on Barcelona. The Chelsea captain has shown his ability in the centre of midfield this season and we could see him in there again this evening.

Moises Caicedo ; Wasn't even used at Turf Moor. There is no doubt, however, about whether he plays in this one. Chelsea's most important player and he will be crucial if the Blues are to get the job done tonight.

Estevao Willian ; Another one who was handed a rest at Burnley. Estevao was about to come on late into the game but when Chelsea scored their second goal, Maresca told the Brazilian to sit back down. Fresh and ready, it is the 18-year-old's opportunity to announce himself on one of the biggest stages in world football.

Enzo Fernandez ; Having Caicedo and James in midfield will allow Fernandez to move further up the pitch and slot into the No.10 role. The Argentina international has already scored five goals this season and will be hoping to add to that tally under the lights at Stamford Bridge.

Pedro Neto ; Very much doubt it is Jamie Gittens. It could be Alejandro Garnacho, but to fit Estevao in as well, Maresca might be tempted to put Neto on the left-hand side. One of Chelsea's most in-form attacking players with three goals and two assists in his last five league appearances, and the Portugal international will be hoping to showcase his ability on the European stage tonight.

Joao Pedro ; All this means Joao Pedro could get a start as the sole No.9, with Liam Delap an option from the bench. One of his quieter days against Burnley at the weekend, but the Brazilian forward has shown strong recent form in front of goal.

Cole Palmer remains the main absentee for the Blues, with the talisman having broken his toe. He has returned to training but is unlikely to feature on Tuesday. Romeo Lavia is also out after suffering a thigh injury, while Dario Essugo and Levi Colwill are both long-term abstentees.

Chelsea have had a fairly mixed season in terms of performances but their recent results have been encouraging, and the win over Burnley took the Blues to second in the Premier League, albeit six points behind leaders Arsenal.

It may be a little soon to say Maresca’s men can launch a title challenge this term, but they return to the Champions League with a chance to put one foot in the next round with what would be by far their biggest win of the season, and the match against Barca this evening will be seen as a real litmus test of where the club are at the moment.

Chelsea are perhaps surprise favourites given that they have struggled against some sides, though Barcelona have had some struggles of their own at times this season, and the reality is that both sides are capable of superb performances as well as surprising collapses.

Barca have won three, drawn one and lost one of their last five matches in all competitions, with that sole loss coming against Real Madrid at the end of last month, while Chelsea have won four and drawn one of their last five outings.

Barcelona predicted XI: Garcia; Kounde, Cubarsi, Garcia, Balde; Lopez, Olmo, Torres; Yamal, Lewandowski, Raphinha.

Key midfield pairing Pedri and Gavi remain out for the visitors, with the former unavailable until next month and his compatriot expected back early next year. Alejandro Balde will be assessed after coming off in the win over Bilbao, while Marcus Rashford has been passed fit after missing that match.

Enzo Maresca’s side are looking for a win over the Spanish champions that would power them towards the knockout rounds. The Blues begin the week in 12th in the league phase table, just two points outside the automatic qualification places, though a win against the LaLiga giants would put them in a solid position ahead of their final three league fixtures against Pafos, Atalanta and Napoli.

Chelsea come into Tuesday's game on a four-match unbeaten run against Barcelona at Stamford Bridge, where the Blaugrana's only victory to date was a 2-1 win in February 2006.