Spare wheel

After getting stranded following a puncture and the failure of the fix and go system I destroyed a nearly new tyre on m,y abarth 595  driving to the nearest garage just over a mile away. As a result I am trying to source either a 185/55/15 zpacesaver wheel or a suitable 4 holed wheel. The father in law has a zpacesaver that would suit for his 2012 EVO punto and is willing to swap if I get him a spare eit her stel rI'm or spacesaver, think even a 14" would work. Get in touch if you have a solution 
Thanks
Peter