Despite dominating the Women's Super League in recent seasons, Chelsea have never won the Women's Champions League, but they should be able to move through to the league phase of this season's competition at Real Sociedad's expense.
A 5-2 win in the first leg of their third qualifying round tie last week has put the Londoners firmly in charge for their trip to Spain, but the team that finished third in La Liga Femenina last season were able to cause the Blues plenty of problems.
With Chelsea having much to prove after seeing Manchester City win last season's WSL, that should mean the ingredients are all there for another entertaining encounter on Wednesday night.
Best Bet - Chelsea Women-Chelsea Women half-time/full-time @ 21/20
Alternative Bet - Chelsea Women to win 3-2 @ 22/1
Bet Builder - Chelsea first-half winner, Over 3 Goals & Over 9 Corners @ 9/2
Best Bet - Chelsea Women-Chelsea Women half-time/full-time @ 21/20
It is just 4/9 that there will be more than two goals in Wednesday's meeting and it is easy to see why after this pair served up a real treat in the first leg.
One thing Chelsea will be keen to avoid this time is slipping behind early, as it took them a while to get into the swing of things after their Spanish opponents took a seventh-minute lead through Ainhoa Marin.
However, one circumstance means that Real may not fly out of the blocks as over the last few days they have been rocked by the news that manager Arturo Ruiz has left the club to take the reins at Brighton, who will be playing Chelsea in this season's WSL.
Assistant Fernando Torres, the namesake of the former Chelsea and Liverpool striker, has taken over to ensure a smooth transition, but that may be easier said than done.
With the domestic campaign set to start this weekend, Bompastor's team will want to get this tie in the bag as soon as possible and we can anticipate a smart start.
There looks to be a strong chance that new striker Melvine Malard, a summer capture from Manchester United, will be given a chance to play from the get-go after scoring twice in last week's first leg following her introduction as a substitute.
She will want to prove her worth early on and these factors can combine to increase the chances of Chelsea going into the interval at half-time and then going on to win the game.
Alternative Bet - Chelsea Women to win 3-2 @ 22/1
While Chelsea are the likely winners it is dangerous to rule out the team who finished third in La Liga Femenina behind the might of Barcelona and Real Madrid.
Their 1-0 home win over Barca was the only occasion the champions did not win a league game last season, so they have shown they do not respect reputations.
The Basque outfit have scored at least twice in six of their last eight games on their own patch and are perhaps unfortunate to have run into a team of Chelsea's quality at this stage of the competition.
Their attacking strength gives them a chance of making life difficult, and it looks like it will be a high-scoring game, so two home goals may not be enough, which makes a 3-2 away win an attractive correct-score proposition at 22/1.
Chelsea to win the first half
Over 3 Goals
Over 9 Corners
Pays 9/2
Building on the above, Chelsea to make a fast start and lead at the interval forms the first leg of our bet builder.
The expectation of goals means backing over three, like last week, makes sense, while the feeling this game could open up once Chelsea feel comfortable nods to a decent corner count.
There were nine in the first leg, but don't be shocked to see that total eclipsed.
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Real Sociedad Women have scored at least twice in six of their last eight matches
Six of Chelsea Women’s last eight games in the Women's Champions League have featured at least three goals
Both teams have scored in seven of Chelsea's last nine away games in Europe
Real Sociedad were the only team to prevent Barcelona from winning a league game in 20 La Liga Femenina matches last season
Real Sociedad scored 29 goals in their 15 home league matches last season
Chelsea have lost just one of their last 11 matches
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This article was written by a partner sports writer via Spotlight Sports Group. All odds displayed on this page were correct at the time of writing and are subject to withdrawal or change at any time.