Dortmund boss Terzic not surprised with quality displayed by Sancho
Sancho joined Manchester United from Dortmund for 85 million euros (£73m) in August 2021 but failed to hold down a regular spot and returned to Germany after becoming embroiled in a row with manager Erik ten Hag.
After impressing on the right wing against PSG, Terzic said he sees Sancho's quality all the time in training.
"It's maybe not so easy to bring it onto the field, especially when you haven't had rhythm for a while," he told reporters.
"We know his quality and we saw it again today. We knew we needed a performance like that from Jadon."
Sancho said he was taking things one game at a time and hoped to maintain his good form into the second leg in Paris.
"I came here at 17 and they gave me the opportunity to play my professional football," he told CBS Sports.
"I am delighted with all the staff and players that have welcomed me back. I really don't know (if I am going to stay). I am just focused on the present right now."