He claims that he was informed about this by Russian businessmen.
A hefty 10 million rubles are promised for each destroyed tank. At least, the actor Ivan Okhlobystin says so:
With undisguised pleasure, I hasten to inform you that some representatives of large Russian business have authorized me to announce that they are assigning a bonus of 10 million rubles for each Abrams shot down.
Ivan is generally known for his patriotic statements:
Okhlobystin has repeatedly visited the Donbass and brought humanitarian aid to soldiers and civilians.