Brighton boss Roberto de Zerbi admits he wants a replacement for Julio Enciso signed.
The Paraguay youngster is facing seven months out due to a knee injury.
De Zerbi said: "We will be without Julio for a long time. It can happen in football, but I feel sorry for him because he was playing really well."
On the transfer market, he added: "I'd like to build a stronger team. We still have 6-7 days left and we're looking for a striker and a midfielder, this due to the loss of Julio and the sale of (Moises) Caicedo.
"Names? It's not correct to talk about players from other players club. I can say that we have several options."