Agent explains Diouf's Lisbon visit
Alexandre Krstic told the Manchester Evening News: "His father lives in Lisbon, that's why he was there.
"There is no doubt Dioufy is interesting different clubs. But there is a big difference between being interested and putting in an offer.
"As I've said, if a club wants to sign him they have got to contact the club and I don't believe anyone has done that."