Season one of the "Loki" TV series may hint at the new owner. During the show, Loki is transported to an alternate reality where Avengers Tower is no more. At the end of the fourth episode, we see the tower destroyed, but instead of there being an "A" on the building, it reads, "Qeng Enterprises." Interestingly enough, Qeng Enterprises is a company that buys Avengers Tower from Stark Industries in the comics. According to Marvel, the company is owned by a businessman named Mister Gryphon, who is a variant of Nathaniel Richards, aka the supervillain Kang the Conqueror, played by Jonathan Majors.
We know that the MCU has big plans for Kang; Phase 6 has a movie titled "Avengers: The Kang Dynasty" queued up. Could Kang's overarching story involve his purchasing of Avengers Tower? It's possible.
