Porto announced having signed Portuguese international midfielder Sergio Oliveira (26), playing for Dragoes first team since 2017/18, on a new deal, lasting until June 2021.
??FC Porto e Sérgio Oliveira renovam até 2021#FCPorto pic.twitter.com/a1eqXE3aM6
— FC Porto (@FCPorto) 12 settembre 2018
Source: transfermarketweb.com