I haven't read this but Jose Been on twitter says Gilbert staying at QS for two years to target Paris Roubaix and Milan San Remo. Not sure what that means for Alaphilippe, Stybar etc.
There's an interview with him in the latest Procycling where he says exactly the same thing. I don't think either Stybar or Alaphillippe will have much choice, it's standard tactics for Quick-Step to have multiple leaders in a race.
I haven't read this but Jose Been on twitter says Gilbert staying at QS for two years to target Paris Roubaix and Milan San Remo. Not sure what that means for Alaphilippe, Stybar etc.
http://www.nieuwsblad.be/cnt/dmf20170926_03098021