A product of PAOK academy, the 19-year-old winger netted 16 times and registered ten assists last season for the Greek club.
His performances in Greece have captured the fancy of several clubs in Europe and he has been linked with a move away from PAOK in the ongoing transfer window.
It has been claimed that some of the big names of European football have taken note of his performances last season at PAOK.
And according to Dutch outlet Voetbal Krant, Manchester United are one of the clubs who have expressed an interest in Tzolis this summer.
The Premier League giants are alive to the possibility of signing young talents and captured Amad Diallo and Facundo Pellistri last summer.
Bundesliga outfit Borussia Dortmund also have their eyes on Tzolis and are known for developing young talent.
The young winger has also been attracting the interest of PSV Eindhoven and Club Brugge this summer.
Tzolis has already broken into the Greek national team and has eight international caps to his name.
