The 17-year-old Englishman joined the BVB from Manchester City in August on a three-year deal, despite interest from north London rivals Arsenal and Tottenham, and Bosz is excited by what he’s seen thus far.
“Well obviously he is a big talent, a lot of clubs want him,” said Bosz, according to talkSPORT.
“I have only been at Dortmund for two months but I know the club was already looking at him for a long time.
“We are really pleased to sign him. He is a big talent. Unfortunately he is not able to play in the Champions League yet.
“We have to be patient, but we try to prepare him for the second round.
“Like I said, he is a big talent and we are pleased to have him with us.”
The winger has impressed at England U17 level, scoring a staggering 13 goals in only 16 appearances since making his debut last year.