The quote from Pep tells me of a bit of irritation at the whining from fans for the "good old days" of Sane blowing down the wing. Pretty clear Pep thinks people are remembering that through rose-tinted glasses. If he wanted that approach again, he'd be instructing the team to play that way. Grealish and Foden both have plenty of pace if instructed to play differently, but they're clearly both being instructed to focus on ball retention and control. Unfortunately lack of an overlapping LB (which the club failed to buy last summer) therefore makes their job very difficult.