Porto are keen to re-sign Manchester City defender Eliaquim Mangala.
The Frenchman has endured a difficult two years at City since his arrival from the Potuguese giants.
El Mundo Deportivo says Porto management are seeking defensive signings and see Mangala as an ideal addition.
City boss Pep Guardiola is in the market for new centre-half signings, so fueling talk of Mangala moving.