Gianluca Vialli blue and white No.9 Chelsea match issued/worn long-sleeved shirt

Gianluca Vialli blue and white No.9 Chelsea match issued/worn long-sleeved shirt, 1997-98, Umbro, XL with v-neck collar and embroidered cloth badge CFC, the reverse lettered VIALLI It is believed that the above was issued/worn in a pre-season friendly