Fleetwood turned to the inexperienced Charlie Adam as manager last season but he could not prevent relegation from League One.
The Scotsman has the Cod Army in the final play-off spot, playing an attractive possession-based style but they could drop out of the top seven on Saturday with their game against Colchester postponed because of international call-ups.
After defeat by Crawley in the play-off final, Crewe have regrouped and five wins from six matches has them in eighth place before their trip to Doncaster.
The Gresty Road club lost the goals of Elliott Nevitt and Courtney Baker-Richardson in the summer when they turned down new deals, while Rio Adebisi and Luke Offord also opted for pastures new.
Manager Lee Bell did convince forward Chris Long to sign a new contract and former Stevenage striker Kane Hemmings will have to plug the gap up front.
Bradford are always tipped to be up among the frontrunners and in Graham Alexander they have a man who has promotion experience from League Two with Fleetwood.
The Bantams also have the prolific Andy Cook, and if he stays fit they will surely remain in the frame.
Newport are going down a different route after dispensing with the services of Graham Coughlan and appointing the former Swansea coach, Nelson Jardim.
The Portuguese is well known to Newport owner Huw Jenkins from their time together at Liberty Stadium, and the loan signing of striker Kyle Hudlin looks a smart piece of business.
Along with Bradford and Newport, Grimsby find themselves just one point outside the play-off spots with manager David Artell waxing lyrical about their recent win at Gillingham.
A subsequent 3-0 home defeat by Doncaster felt like a dose of reality and they will need to plug a leaky defence which is the third worst in the division.
Fresh from romping to the National League title by 12 points, Chesterfield were many pundits’ tip for promotion and, despite an inconsistent start, a four-match unbeaten run may indicate they are getting to grips with things.
With James Berry, Armando Dobra, Will Grigg and Dilan Markanday in his ranks, manager Paul Cook is well stocked with the firepower needed to sustain a promotion push.
A lunchtime win over Notts County for the Spireites would push them up from 12th to seventh.