Chelsea have agreed a deal with Barcelona to sign winger Pedro for a fee of £21m.
The 28-year-old, who had been a target for Manchester United all summer, is flying to London to finalise terms on 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 first two Premier League games of the season for the first time since 1998 after following up their 2-2 draw with Swansea on the opening weekend with a comprehensive 3-0 defeat at last season’s runners-up Manchester City.
The Blues play at West Brom on Sunday before a home game against Crystal Palace on 30 August, two days prior to the transfer window closing on 1 September.
Manchester United were interested in Pedro as they look to replace Argentina winger Angel Di Maria, who has joined French champions Paris St-Germain for £44.3m.
Pedro made 50 appearances last season and has won the Champions League three times, including scoring a goal in the 2011 final against United. He also played a part in Spain’s World Cup and European Championship triumphs.
He has made three appearances this campaign and came off the bench to score the winner in the 5-4 Uefa Super Cup victory over fellow Spanish side Sevilla.