Lugash
Rohan Ricketts
And Son wasn't in our first team last season. Our first team was: Lloris, Walker, Vertonghen, Dier, Alderweireld, Rose, Wanyama, Dembele, Alli, Eriksen, Kane. Admittedly we struggled to play that team due to injuries, but that was our first team. So, to have Mahrez, you would either need to drop Dembele/Wanyama, or have a back 4. So that's why I asked.
Yeah, it's a good question - I'd switch to a back four (despite the success of the 3)
Our full-backs are good enough and energetic enough to act as wing-backs, yet without losing the extra offensive player.
It's slightly riskier, of course, especially with Trippier largely untested, but if that extra man is Mahrez, I think it's well, well worth it.