But Thaxton expects the Olympic silver medallist to give Romanov a wide berth after his emphatic defeat by the European lightweight champion.
But Laszlo, in a barbed comment about the support on offer from Romanov, dropped a hint that his future may lie elsewhere.
Romanov, in a BBC Frontline Scotland documentary on Wednesday, explains his controversial removal of the trio.
BBC: SPORT | Football | My Club | Heart of Midlothian | Romanov lashes out at sacked trio
It also has signed up Hollywood actress Mila Kunis to lead a fresh marketing campaign, featuring images of the starlet wearing a Romanov-style necklace inspired by an 1880s design with 79 emeralds from Gemfields's Zambian mines.
The early years of Romanov's reign featured a number of players brought in from his Lithuanian club Kaunas before turning to Hearts' youth system.
It appeared that Romanov had decided to operate a more hands-off approach, having had a turbulent relationship with former managers, such as George Burley and Stevie Frail.
Bulgarian Cervenkov led the side who are sponsored by Romanov's bank to a 1-0 Super Cup victory over Suduva, who sit fourth in the league and won the national cup.
Rix left Hearts last March after a disagreement with Vladimir Romanov over the majority shareholder's meddling in team selection.
It's been on the market for a long time, but Romanov hasn't found the buyer he needs to limit his losses.
"It will be a very exciting occasion for Hearts supporters and football supporters in Scotland as a whole, " said Hearts chairman Roman Romanov.
And Hearts chairman Roman Romanov caused some confusion later that same month when he said a well-known figure was already "working incognito" for the club.
BBC: SPORT | Football | My Club | Heart of Midlothian | Duffy handed Hearts director role
Several dozen other Romanov scions may attend the St Petersburg event, but they belong to a rival branch of the family.
Thaxton, a veteran of 15 years as a professional fighter, is facing up to the fact that he is the rank outsider to win against Romanov.
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