Everton's Icelandic midfielder Gylfi Sigurdsson is introduced to supporters on the pitch ahead of the UEFA Europa League playoff round first leg against Hajduk Split.
Only Manchester City and Manchester United have spent more than Everton in the Premier League on new signings this summer, according to figures from the Telegraph.
Yet despite that, following the Toffees' 2-0 league defeat at Chelsea on Sunday manager Ronald Koeman was quoted by FourFourTwo saying: "We need at least two more players, to get numbers in, but most important is to get a striker in and one more player."
Manager of Everton, Ronald Koeman.
That striker is looking increasingly like it could be Diego Costa, with football.london reporting that Atletico Madrid have agreed a deal to re-sign the Spain international and will then loan him to Koeman until January.
That is because Atleti currently have a transfer ban imposed on them that means they cannot register any new players until 2018, but with Costa keen to leave Stamford Bridge after a falling out with boss Antonio Conte, the Spanish side need to find a solution if they want to sign the 28-year-old.
Diego Costa of Chelsea celebrates scoring his side's first goal during the Emirates FA Cup Final against Arsenal.
Koeman has admitted that the forward would be "welcome" at Goodison Park and his arrival would not only solve a problem for the Merseysiders, but could potentially take them to the next level and push them towards a top four finish.
Costa is a proven attacker in the top tier of English football, scoring an impressive 52 league goals in 89 matches since his 2014 switch from Atletico.
While Koeman may only have the Spaniard for six months, it is early on when he does the most damage with almost two thirds of those strikes coming in the first half of the season - although having been in Brazil this summer rather than at pre-season training, there may be some concerns about his fitness initially.
With two goals from three league outings and the pairing of Wayne Rooney and Sandro Ramirez upfront not working at the weekend, Costa could be the missing piece of the jigsaw for Everton; even on a temporary basis.