What is Negi's recommendation against the Sicilian Four Knights game?

I am not positive on the name. I am talking about the position arising after 1. e4 c5 2.Nf3 e6 3. d4 cxd4 4. Nxd4 Nf6!? 5. Nc3 Nc6.

I own Parimarjan Negi's 1.e4 vs. the Sicilian, Vols 1 - 3, but as far as I can tell, this isn't covered. I haven't worked through the books yet, so all I can go by is the variation index at the end and I wasn't able to find it there. I'd be interested if there's some detailed analysis and recommendations on the 6. Nxc6 line or maybe his implicit recommendation is to transpose to the Sveshnikov via 6. Ndb5 d6 7. Bf4 e5, which is, of course, covered.

Thanks!

he recommends Ndb5 and other moves than 6...d6 are covered in book 3 page 440

thank you so much!