If you have time on Day 1 and have a lot of tokens, you can try to bid for young norgen players right after the server start. These players are better than scout players but you may need large amount of time, tokens and money to buy them.
Remember that players who have not yet been re-signed will not be available for matches in new season, and Cup matches will be scheduled on any time on Day 1 & 2. If you are not available on server start and worry that your starting players are not adequately arranged, you should consider and arrange before new season day.
Edit:
BTW, I would like to remind those who are new to this game that detail statistics of players, league table, CL/Cup trees, etc. of current season will be lost on Day 1 of new season day. So capturing these information before new season day may be one of your preparation work for new season.