Simply start a new Manager Career Mode, I just made a default Manager, choose to Create Your Club rather than an authentic one. I advanced through all the customisation options, leaving everything as default. Once you are in the main HUB, go to the Season tab, then click Calender. Click
to go instantly to June 22, sim to June 30th, letting the whole season skip past you. Then once the simulation has finished simply advance into the next season.
I created this video to help:
Hope this helps.