If there is any chance that he will leave Napoli due to his clause and not signing a new contract removing such a thing, for me Kim Min Jae is a no-brainer at that price. One of the best in Europe this season, with the complete package.
Also, in terms of style and what Lisandro offers us in possession probably the best available and reasonably priced fit would be Facundo Medina from Lens. Left-footed, nailed in the best defense in Ligue 1, he is an excellent player to have in the build-up play. So calm and composed on the ball, he can play decisive passes into the opponent's half, and being left-footed also helps to open that direct passing lane to LW once our LB goes narrow - the part of the reason why we saw Shaw at LCB rather than Maguire this season.
Apart from passing, Medina is a great carrier too, able to take on players when they put him under pressure. Although Lens play 3-4-3 for a while now, their shape in possession is very similar to ours ( 3-2-2-3 or WM shape ) - wider base to circulate the ball in the first phase ( 3 CBs vs ours with 2 CBs + RB ), double pivot in front of them ( IWB + DM - our shape from last game where Malacia went narrow to form a double pivot with Casemiro), two players in each half-space ( Lens have some sort of inverted wingers when we have free #8 like Eriksen, Bruno, Sabitzer, etc. ), two players responsible for wide areas ( Lens play with wing backs and we have winger stretching the pitch ) and, of course, #9 upfront.
The biggest issue I have with Medina is that although he is fairly aggressive in his defending, similar to Licha, he is still way less effective in doing it, even though he is part of the best defensive record in the league. I'm eager to watch him tonight against PSG and how he will cope with the best attack in the league.