There’s no official sale book bouncing around yet when it comes to the Brooklyn Nets, but already the investment bank Allen & Co. has received several expressions of interest, The Post has learned.

The basketball team owned by billionaire Russian Mikhail Prokhorov hoped to fetch around $2 billion, but we hear one interested party has been trying to box out others in the sale process.

A source told On the Money that Alibaba Executive Vice Chairman Joe Tsai has expressed an interest in the team, though reps for his family office, Blue Pool, deny it.

Reports suggest the Nets want to find a Chinese backer — not surprising given the success of Yao Ming with the Houston Rockets, which are also for sale.

The Post’s Josh Kosman reported last month that Mike Zavodsky, the Nets’ executive VP of global partnerships, was in China with 20 meetings lined up.

The majority stake sale comes after a failed attempt to sell a minority interest in the team.

Looks like the Nets could end up moving from Russian ownership to Chinese — and they still won’t have any red in their uniforms.