Lease Renewal

Earlier this month I received the paperwork to renew the lease on my flat, I thought about moving into a smaller place but I can't be bothered with packing and moving so I renewed. Instead of moving I decided to rearrange the furniture in my bedroom and am contemplating the purchase of a new sofa. For those of you who have been to my flat know that the sofa is the most uncomfortable thing in the world. Tomorrow I will go out and see how much a new sofa will cost, the one thing that is good about the sofa is the fact that it's a sofa bed so there is a place for visitors to sleep. Of course I am graciously giving up my bed at the end of the month when my next round of visitors come since one of the guests goes to bed at a very early hour (Can you guess who?). The problem with a new sofa is that I have to call the property management company to remove the existing one and I'm not sure if that will actually happen. I probably should call them first before I actually go out and look for a replacement but that would be logical. I wonder if I tell them that I am happy to leave the new sofa when I depart if that would make a difference?