My tenant wants to leave early before tenancy expires, what can i do?

does the tenancy have any clauses regarding early termination before fixed term tenancy?

Is it a commercial lease? If so, in this context the best option for you may be to negotiate an early exit with the tenant on terms that are agreeable to all parties. Tenants have a number of ways to get out of a commercial lease early including transferring the lease (assignment), subletting the premises,negotiating an early exit with the landlord or using a \"break clause\" in the lease contract. All of these options are explaining in further detail in this article: https://www.elitelawsolicitors.co.uk/assignment-of-a-lease/

Hope that helps!