The club will have to act fast to find a replacement if the start of the season isn’t to feel the negative effects of being without a head coach.
Following Martin’s departure, Dean Lewington will take interim charge of the team going into the new campaign, though the skipper is not interested in the position full-time.
Dons’ Sporting Director Sweeting has admitted he had applications before Martin even confirmed his move to Swansea, however there is no one in the pipeline to take over in the immediate future.
"It will take as long as it takes," he said. "We were prepared for it in it's infancy, but it will take as long as it takes. We're talking to people, we've had some interesting applicants as well as the people I had in mind. We recognise games are coming thick and fast but we want it sorted as quickly as possible.”
MK Dons travel to the Reebok Stadium to take on Bolton Wanderers in their League One opener this weekend.
We have gathered the best of today’s EFL speculation below...
1. Lincoln City priced out of move for 22-year-old striker
Lincoln’s interest in Portadown striker Lee Bonis has ended as his ‘fee went up’ and The Imps are refusing to pay. Bonis spent time on trial with Burnley earlier this year. (The 72)
Photo: Catherine Ivill
2. Crystal Palace join race to sign Bournemouth winger
Crystal Palace have now joined the race to sign Bournemouth’s Arnaut Danjuma, alongside Watford and Villarreal. The Spanish side had reportedly submitted a £13m bid, but the CHerries value him at £35m. (The 72)
Photo: Alex Pantling
3. Portsmouth close to signing of Dinamo Zagreb midfielder
Pompey are closing in on the loan signing of former Arsenal midfielder Robbie Burton. The 21-year-old has reportedly turned down an offer from another Croatian club to return to England. (Football League World)
Photo: Harriet Lander
4. Sheffield United agree to sign Leeds academy product
The Blades have agreed to sign ex-Leeds United midfielder Ronaldo Viera from Sampdoria. The 23-year-old will move on loan with a view to a permanent deal. (Football Insider)
Photo: Alex Livesey