I'm not really sure what you mean by KDB jumping ahead of him? You think KDB will get ousted from the number 10 position by Gabriel Jesus?
I doubt that very much. For starters - De Bruyne is a better finisher than Sané and Jesus put together. Thats not belittling them, De Bruyne's finishing is as good as anyone's - hence his 17 goals last season despite moving to a new club, being shifted around by Pellegrini, and being in a team which really wasn't clicking offensively. With Pep coming in and a year of experience here, I wouldn't be surprised if Kev scored 25 goals in all competitions.
And lets not forget that Guardiola was a driving force behind us spending £54 million on KDB last summer - you think he's immediately decided he's not up to scratch anymore and is going to bench him???