Erling Haaland, Manchester City's £51m signing from Borussia Dortmund, is part of his new club's tour of the USA and could make his debut against Club America.
Kyle Walker says he has been impressed with what he has seen from the striker, who scored 85 goals in 88 games for Dortmund, but warned the 21-year-old that he has big boots to fill in the shape of Sergio Aguero, City's record goalscorer who left the Etihad a year ago.
"Erling has been really good," said Walker. "He's young - we have to take that into consideration.
"Obviously he's got big responsibilities and probably big boots to fill with Aguero being the last - bar [Gabriel] Jesus - out-and-out striker for Manchester City.
"But from what I've seen in training he looks strong, he looks powerful and he looks eager, and that's the main thing. As long as he keeps his standards, keeps doing what he was doing at Dortmund and brings the same mentality and adapts to the Premier League.
"We all know it's very difficult. No one really comes into a team and hits the ground running straightaway so he's going to need time, but that's down to us as players, managers and the club as a whole to make sure that we're making him feel as welcome as possible."
