OXFORD United have signed former Spain under-17 international Toni Martinez on loan from West Ham United.

The Premier League side paid £2.4m last April for the 19-year-old striker after he scored more than 100 goals for Valencia’s youth teams.

Martinez has joined the U’s for the rest of the season and adds an attacking option lost when Tyler Roberts returned to West Bromwich Albion earlier this month.

He said: “I’m very happy to sign for Oxford.

“My objective is to play as many games as possible and score goals to help the team.

“It’s a challenge to go and play in League One, learn English football and score as many goals as possible.”

He is cup-tied for the Checkatrade Trophy clash with Bradford City tomorrow night, which is subject to a pitch inspection, having scored twice for the Hammers Under 23 side against Coventry City in August.

Martinez is available to make his debut on Saturday in the Emirates FA Cup fourth round tie at home to Newcastle United.

Derek Fazackerley, United’s assistant head coach, said: “It’s been no secret we’ve been looking to add to the squad and bring players in.

“It’s not an easy transfer window to work in.

“The recruitment side have been excellent in our time at the club and once again we think we’ve found somebody who’s going to have an impact, not only on the squad but also the team.”