Newcastle fly-half Joel Hodgson says Saracens have disrespected them by playing the Sharks in a friendly the day before their LV= Cup group clash.
Saracens, who tackle the South African side on Saturday before meeting Newcastle the following day, have named a strong line-up for the friendly.
The Sharks are a side whose chief executive is former Saracens front-row forward John Smit.
And their decision to name what is probably their strongest possible side for Saturday's fixture has clearly fuelled Hodgson and Newcastle Falcons.
"From our point of view it is a bit of ammunition, the fact they are playing a friendly game against a South African team the day before we play them," he told Chronicle Live ahead of the away fixture.
"It is a bit of a kick in the teeth, and there must have been other times they could have played this friendly."
He added: "To pick the one weekend when they are also playing us adds a bit more fire to the belly, and it is another reason for us to really get out there and graft.
"We want to show them that although we are changing things round with a young selection on Sunday, we are still not there to be messed around with.
"We are there to be respected, and we are going there determined to put on a good show."