Hello “Name” and login/logout in menu

Hello
And thanks for your “FREE” great job :) :)
Is there a simple way to add text like “Hello Lucio-Disconnect” with a direct disconnection link (directly returning to homapege after disconnect) in the main menu of my Vantage theme

Tried some plugins, but none seems to give the ability of displaying connected user name and custom text (Hello, or “Bonjour” in french)

Thanks in advance for help and excuses for my bad english…

Lucio