You should make a decision tree. eg is hybrid something you would be willing to do? Your boss? Your employer? You're pretty junior, however, so I'm not sure

You should make a decision tree. eg is hybrid something you would be willing to do? Your boss? Your employer? You're pretty junior, however, so I'm not sure you really have a strong position if you can't come to an agreement. The best negotiating tactic is a job offer, though you don't need to threaten. just be prepared for them to say ok.