Sancho also left City for Germany and has excelled with Borussia Dortmund over the past two season.
Matondo scored for Schalke against RB Leipzig last month, and after earning a recall to Ryan Giggs' Wales squad, the 19-year-old wants to push on.
"It's only one goal and it's only my first start of the season," said Matondo.
"But hopefully I can get many more minutes this season and contribute with goals and assists and help the team climb the table.
"If I can do as well as he (Sancho) has done so far then I will be really happy.
"He is a great player. I have always known that since being at Manchester City with him how good he can be and how good he will be. Hopefully he can help me as well.
"Jadon didn't make me move to Germany, but of course he is doing so well there and when it came around I thought 'why not'?
"It wasn't that I couldn't see a pathway (at City), I believe in myself. Obviously at Manchester City it is tough - all the players are top players.
"But it was more that I had the opportunity to go and play first-team football and at the time I didn't have that at Manchester City.
"So I preferred to play first-team football so I took the opportunity."