Leicester City have sent scouts to watch two Porto players.
Portuguese media outlet O Jogo say the Foxes' representatives were in stands for Sporting Lisbon's 2-1 loss to Porto.
The report suggests Leicester could have been watching forward Moussa Marega and left-back Alex Telles.
Both players have long been linked with an exit from the Estadio do Dragao.
Leicester boss Brendan Rodgers is expected to receive significant funds to improve his squad this summer.