Per the source, Bruma has already told PSV that he is happy at Galatasaray but the Dutch giants are continuing efforts to sign the Portuguese winger before his stock rises.
The 21-year-old has scored five times in six friendlies over the pre-season period and is finally starting to show the form that earned him a €10 million move from Sporting Lisbon to Galatasaray in 2013.
Bruma was tipped as being an understudy for Ronaldo when he first broke through the ranks but his development was hampered by injuries and turmoil at Galatasaray in regards to managerial appointments.
The Portuguese international does however, have age on his side and already has top level experience at Sporting, Real Sociedad and Galatasaray under this belt.
Bruma caught the eye of Manchester United boss Jose Mourinho last Saturday when he scored a well worked goal in the friendly played in Sweden.
“He [Mourinho] congratulated me for the performance and said he was impressed with me,” Bruma said. “He promised to closely monitor my work and said I could play for the national team soon.
“Of course it was amazing to hear this from Mourinho and he said he will keep an eye on how I do this season.”
A source close to the player told Turkish-football.com that the Lions are aware of interest from United and PSV but they want to keep Bruma for at least another season. The Istanbul giants value Bruma as being worth €25 million and will not accept any offer below their asking price.