On Tuesday Cole Palmer warned his Chelsea teammates that 'everything can happen in a final' and 'it doesn't matter who you are playing or where it is'.
But with such a huge financial gap between them and real betis, the opportunities are firmly stacked in favor of Chelsea, because they want to be the very first side ever, all of which wins all four major European club matches.
Victory would finally also play a first trophy under Todd Boehly games after a £ 1.2 billion transfer edition since he took the lead three years ago.
The billion pound blues from Enzo Maresca are paraded by the League conference that defeat lower and less expensive opposition from Sweden, Poland, Denmark, Armenia, Ireland, Kazakhstan and Greece on their way to Wroclaw.
They will do it again on Wednesday, when they take on a side of outsiders that are cut together by Manuel Pellgrini – and only cost £ 84.5 million
The Chelsea team cost a stunning £ 1.39 billion to assemble – the most expensive side ever, according to UEFA.
While the last match of Chelsea against Nottingham Forest contained a £ 222.8 million midfield combination of Enzo Fernandez and Moises Caicedo, Betis' whole start 11 against Valencia on Friday cost only £ 28.2 million.
Under Boehly, Chelsea spent £ 115 million on Caicedo, £ 107.8 million to Fernandez, £ 70 million on Wesley Fofana and £ 88 million to Mykhailo Mudryk.
They have also paid more than £ 50 million for Romeo Lavia, Christopher Nunku and Pedro Neto.
In the meantime, Betis has only spent £ 34.3 million to 12 players, including two on loan, in the last two windows.
Their biggest edition to a current player is £ 15.5 million on William Carvalho.
The side based in Seville has an annual payroll of £ 44,482,477, with an average weekly salary of £ 35,642, according to Capology.
Chelsea, who pays Reece James £ 250,000 a week and Wesley Fofana £ 200,000, spends £ 169,925,600 annually, with players who earn an average of £ 68,079 per week.
And although they have dropped billions on 41 players in six windows under Boehly, their Spanish opposition are led by Manchester United-Leenlee Antony, who should be 'crowdfund' to keep another year, teammate Isco said.
The shape of Antony since he came to Betis is so impressive that club legend Joaquin even joked that they should 'kidnap' the Brazilian to keep him in Estadio Benito Villamarin next season.
The 25-year-old, who has scored four times and has delivered three assists in the Conference League since January, is far from the first star that had rejuvenated his career in the five years that Pellegrini has been to the Andalusian Oubit.
Former Real Madrid – midfielder Isco described Betis as 'My Light in the Darkness' after six months without a club, while Giovani Lo Celso was also bounced back after struggle in Tottenham – after he has only been signed for £ 8.4 million
Pablo Fornals, another export from Premier League, only cost £ 6.8 million after leaving West Ham last season.
Pellegrini, who came to West Ham after a single season, won the Copa del Rey in 2023 – Betis' first trophy in seventeen years.
This season they beat local rivals Sevilla for the first time in seven years and they close after a first European title.
But they did not broken the bank under the Chilean.
In December 2023, Pellegrini encouraged the club to increase their expenses.
'The next step for this betis depends on the financial situation of the club. We could hardly sign in recent years, “he said.
'If there is stability, there can be a more competitive team. But this team has no ceiling, we compete against someone and we have won a Copa de Rey. What has been done in these four years is something to take your hat. '
The finances of Betis have improved in recent years. Last year they took a loan of £ 105 million from the American investment bank Goldman Sachs while they want to improve their stadium, including adding a roof.
But they are still bound to strict LaLiga salary rules.
It is remarkable that their record transfer costs are still the £ 21.5 million that they paid for Denilson in 1998 – at the time of a world record.
Twenty -seven years on the most, they spent a player in their current team on Carvalho.
The ownership styles between the two clubs could no longer be different.
Increasing frustration about the direction of Chelsea has led to hundreds of fans furious protests against Boehly and Clearlake Capital outside Stamford Bridge cities.
The American easily rejected criticism as 'par for the course'.
At Betis, supporters have around 55 percent of the club in addition to local business people Angel Haro Garcia and Jose Miguel Lopez Catalan.
The two parties have confronted each other four times before, with Betis won the last meeting with 1-0 in a Champions League group match against a Mourinho Chelsea side with Petr Cech, Frank Lampard and John Terry in November 2005.
Chelsea can be sure that they will return to the top competition of Europe next season and a first trophy in four years could finally see the billion pounds repay to pay back their hefty costs.