vergini has indicated he may be ready to extend his stay at sunderland .
the last of them was a start in sunday 's 1-0 derby victory over newcastle which provided a huge boost to the club 's top-flight survival hopes .
santiago vergini -lrb- left -rrb- is keen to stay at sunderland having played a key role in the wearside outfit 's 1-0 derby win over newcastle united that