Manchester City and West Ham had scouts posted at Porto's clash at Gil Vicente yesterday.
Porto were comfortable 2-0 winners on the day.
O Jogo says in the stands were scouts from City, Sevilla, West Ham, Crystal Palace, Montpellier, Levante, Bologna and Real Valladolid.
No names were put forward as potential targets, though Mehdi Taremi was on the scoresheet for Porto.
