Yoda is a sweet guy who may need to be an only cat. He's had a few issues at his current placement but that could be related to him needing to be rehomed. 

It is suggested as with all feline adoptions to keep a new companion indoors for a several weeks so they become familiar with the new surroundings. It is also good to make sure they have a "special" area they can escape to when company comes. This will make both you and your companion have a much better relationship.