Simmons concluded his third loan spell with the Pilgrims with one goal in 13 appearances, to take his overall United tally to two goals in 21 outings.
Marcus Marshall (Coalville Town) and Courtney Wildin (Corby Town) have, meanwhile, completed their Evo-Stik Northern Premier Division loan moves away from The Jakemans Stadium and will be back with the Pilgrims for the final week of the campaign.