The two teams clashed in the Emirates Cup this afternoon, when Porto fought back for a 3-1 victory.
Jackson Martinez was left on the bench against the club that is in negotiations to buy him for just under €40m.
“I don’t know if you noticed, but whenever Rafa Benitez came towards me on the touchline I’d move away, because I didn’t want him to ask about Jackson Martinez,” joked Fonseca.
“As far as I am concerned the case is closed. I am extremely confident Jackson Martinez will stay with us.”