LONDON (AFP) - Everton manager Roberto Martinez sealed his fourth signing in the space of three days as Barcelona teenager Gerard Deulofeu joined the Premier League club on a season-long loan on Wednesday.

Deulofeu scored 18 times in 33 matches for Barcelona's B side last season and also made a handful of substitute appearances for the Spanish champions.

The 19-year-old was rewarded with a long-term contract earlier in the close-season, but Barca are willing to loan him to Everton in a bid to further his development.

Martinez has moved quickly to secure the teenager's services, making his fourth signing after previously raiding his former club Wigan for striker Arouna Kone and defender Antolin Alcaraz, as well as landing Atletico Madrid goalkeeper Joel Robles, who was on loan with the Latics last season.