Chelsea have agreed a deal with Barcelona to sign winger Pedro for a fee of £21m.
The 28-year-old, who was a target for Manchester United, is flying to London to finalise the terms of the transfer.
The Spain international is a product of the La Liga club’s academy and has scored 99 goals in 326 appearances since his debut in 2008.
He will be Chelsea’s second signing in less than a week after the arrival of Ghana defender Baba Rahman.
They are also keen to sign England defender John Stones from Everton, who have already turned down offers of £20m and £26m and, reportedly, a third worth £30m.
Pedro’s arrival could result in Colombia winger Juan Cuadrado leaving Chelsea after a disappointing seven months at Stamford Bridge. The Colombia international was signed for £23.3m from Fiorentina in January.
The champions are without a win in their opening two Premier League games for the first time since 1998 after following up their 2-2 draw with Swansea with a comprehensive 3-0 defeat at last season’s runners-up Manchester City.