Aston Villa were among the teams on the scouting list at Porto v VitoriaGuimaraes.
The two Portuguese sides played out an entertaining game on Sunday, with Vitoria winning 2-1.
Vitoria is part owned by the same group that has the majority ownership stake in Aston Villa.
There does appear to be a link between the two clubs that could come in handy this summer.
Per Birmingham Mail, Jota Silva of Vitoria is emerging as a serious Villa target.
He is one of many youngsters who have been earning rave reviews for their displays this term.