Benfica hope to have an answer from Chelsea this week over Wallace.
The young Brazilian fullback is a loan target for Benfica next season.
Record says Benfica want a quick answer from Chelsea this week over the prospect of Wallace joining them this summer.
Wallace spent last season in Holland with Vitesse Arnhem and also had a spell on-loan at Inter Milan.
The defender was snapped up two years ago by Chelsea from Fluminense.