England are facing a battle to keep hold of Fulham attacking midfielder Fabio Carvalho as Portugal plot a move to secure the 19-year-old's future.
Sportsmail understands the Portuguese FA have been monitoring Carvalho since last season, hopeful they can persuade him to switch allegiance, and could fast-track the Fulham academy graduate into their Under-21 set-up to bag his long-term services.
Carvalho, who was born in Portugal and started his career at Benfica, has so far represented England up to Under-18 level.
The FA are keen to tie him down given his undoubted ability, but the lure of playing for his homeland could be appealing to Carvalho.
The teenager scored his first goal for the Cottagers in the 3-1 defeat to Southampton in May, with the team's relegation to the Championship already confirmed.
He then followed up that notable milestone by starting his match as a professional against Manchester United at Old Trafford and had a chance the opener, rushing his effort as Scott Parker's side claimed an unlikely 1-1 draw.
Carvalho has been in Marco Silva's plans from the outset this season, netting in wins against Huddersfield, Millwall and Hull, as well as bagging an assist against the south-east Londoners.
Fulham lost their first game of the campaign on Saturday as Josh Bowler's strike saw them slip to third.
It was also the first game that Carvalho had missed this term as he nurses a slight injury.