Manchester United captain Wayne Rooney admits he knows little about new team-mate Anthony Martial, despite the youngster becoming the world's most expensive teenager.
Louis van Gaal splashed out £36million to buy the winger from Monaco on transfer deadline day.
The deal made waves across the footballing world, but Rooney concedes that, despite the buzz surrounding the 19-year-old, he is largely in the dark about his new team-mate.
"I haven't seen much of him play, to be honest, so I can't say too much," Rooney said on the eve of England's Euro 2016 qualifier in San Marino.
"He was fantastic against Arsenal last season.
"He's got a lot of ability from what I've seen and I'm sure he'll be a great player for us."
Martial is currently on international duty himself, having been given his first senior call-up by France.
He made no attempt to hide the fact he sees himself as a potential rival for Rooney's place up front this week, admitting he told Van Gaal he prefers to play in a central role.
"He asked me my preferred position," Martial said.
"I prefer to play in the centre but he told me I could play in a number of positions - it is the coach who decides but whatever position I play, I will do the best I can."