another players claim near mine

hi, im posting this for my friend rexxo6978, hes building a new house and a player named Menula has claimed a small area right infront of his base. because of that rexxo cant claim all the land. hes asking to remove Menula's claim so he can claim that land and build on it. thank you.

X: 8931.033
Y: 66.00000
Z: -8209.008