Inter Milan fans are upset over the prospect of losing Romelu Lukaku to Chelsea.
The Curva Nord have released a statement urging the board not to sell the centre-forward.
The group declared:
“Any type of market operation must now, as agreed, be aimed at improving the squad.
"Making cash without investing adequately does not fall within the acceptable range. This applies to any player. We will not suffer idly by, made fun of by anyone, and we will act accordingly and consistently with what was defined at the end of the season.
"We do not believe there is anything else to add."