I'm sure it won't be a problem if for example Mahrez really leaves in this transfer window, because Mahrez is also only focused on playing on the right wing. Therefore, of course Pep Guardiola will also adapt it to Manchester City gameplay which will be used later if, for example, Mahrez realy leaves. After all, at this moment also Manchester City has succeeded in signing in Kovacic and it seems that Manchester City are exploring the midfield for next season to be better after losing Gundogan. But regarding rumors of Mahrez departure, i personally still not entirely sure if Mahrez leaves at this moment, because Mahrez also is still under contract.
Until now, Man City still looks normal in the hunt for new players in the transfer market, only Mateo Kovacic has just officially joined them so far. Regarding Riyad Mahrez, it looks like he will be retained by Guardiola considering the vital role of the winger from Al Jazair. If Pep has ambitions to defend the Champions League title next season then I think Mahrez must stay put for next season. Even though it is reported that the Sudi Pro League club (Al Ahli) are interested in him but Mahrez doesn't want him for next season. I think the best option for him is to stay until the end of his contract and go to Al Expert next season while enjoying the end of his professional career.
It is reported that Man City has targeted 19-year-old winger Julio Enciso from Brighton & Hove Albion as a long-term option to be plotted to replace Mahrez or Bernardo Silva. It looks like there will be surprises in Man City's transfer this time if you see their movements are not being monitored by the media.