Leaseback length options

Our management company, who managed our resort for 7 years is in Administration and is proposing a huge reduction in the rent to remain. The owners have secured other proposals also at reduced rentals but they are all on the basis of a new 9 year term. Most owners only want to sign up for 3 -5 years. Is 9 years a statutory minimum length for a leaseback agreement? If so given our circumstances where our management company is likely to break the lease after 7 years does the 9 year minimum term still apply to a new agreement? If anyone can shed any light on this issue I would be very grateful.