Inter Milan scout Gianfranco Bedin was blown away by Manchester United transfer target William Carvalho's performance for Sporting Lisbon at the weekend.
Inter had watched Carvalho in action against Gil Vicente, and the Italian giants sent Bedin back to Sporting to check him out in the big game against rivals Porto.
Sporting forward Islam Slimani scored the winning goal in the second half to bring his side to within seven points of league leaders Benfica.
Carvalho, 21, made his Portugal senior national team debut last year after a superb start to the season with Sporting.
And he's continued his impressive form into the second half of the season, with major European club scouts now a fixture at the Estadio Jose Alvalade.
United boss David Moyes is expected to get a bumper transfer kitty for the upcoming summer, after a disappointing first season in charge at Old Trafford.
And central midfield will likely be an area of real concern heading into the off-season, with United short of ideas and options in what has traditionally been a position of strength for the club.