Hearts are expected to confirm the signing of defender Faycal Rherras and striker Conor Sammon ahead of a return to pre-season training next week.
Rherras is a 23-year-old left-sided player of Moroccan descent who has spent the last year playing for Sint-Truiden in the Belgian top flight.
Sammon, the 29-year-old ex-Kilmarnock forward, has agreed a three-year contract as he leaves Derby County.
They will arrive as Hearts prepare for their first Europa League qualifier.
Six players left Tynecastle in the summer, with three first-team regulars - defender Blaze Augustyn, goalkeeper Neil Alexander and midfielder Miguel Pallardo - all now on the lookout for new clubs.