Blackpool manager Michael Appleton was interesting Leeds United over the summer.
The Athletic says Appleton was on Leeds'radar to become Marsch's assistant manager at Elland Road before taking the job at Bloomfield Road.
The 46-year-old departed his former club Lincoln City at the end of last season, leaving them in League One where they're currently struggling in 15th.
Appleton is now in his second stint with the Seasiders, after managing them back in 2012 where he resigned after just 11 games but nearly arrived at Elland Road.
Marsch did add a new assistant during the summer, bringing in Austrian coach Rene Maric who was previously assistant manager at European elite clubs like Red Bull Salzburg, Borussia Monchengladbach and Borussia Dortmund.