HELP – really confused – friend using binance accidently sent using BEP20 so I need to send back to his wallet and convert to eth network (ERC20)

Hi,

I'm really confused – my friend using binance accidently sent using BEP20 so I need to send back to his binance wallet and have him resend by using the eth network (ERC20).

I had to do a bunch of steps to manually add the binance network and import the token, but when I am in metamask to send the token back to him, it says I don't have enough gas fees. Any idea what is going on?

See image below

https://imgur.com/a/NBapaod