Marko Grujić, who started his career at Crvena Zvezda before moving to Liverpool in 2016 for seven million euros, is being frequently mentioned for a potential return. However, as of now, a return of the 29-year-old Porto player is not very close, although the situation might change. Grujić's contract with Porto expires next year. Porto has set a price of four million euros for the midfielder, and among the interested parties is Oviedo, managed by Serbian coach Veljko Paunović.