Just my thoughts: Absolutely no links to Mental Mario, but IF he wasn't such a crackpot and if I as manager thought I could 'harness his potential' the way Tim Sherwood did with Adebayor, he could be a out-of-left-field stroke of genius sort of signing. The sort of Robbie Fowler back to Liverpool, Scot Parker to us, Gary McCallister to Liverpool type of signing.
I fear he's fallen away the same way Mido did, just from a greater height. But his stock is now as low as it's ever been, if someone took him on loan he could be a great signing, with a point to prove. He has undoubted quality but just seems to entirely lack any sort of desire now.
A one season loan, pay some of his wages, have a right to buy at the end and if he comes good he could be a surprise package. One final problem with him however is even if he somehow was amazing - he could easily be just as atrocious one season later. Usually just after signing on permanently (a la Adebayor and Mido!).
An article from the Athletic on him here. Part of me would love us to sign him for the sits and giggles. The other part, my brain, says no. Not many like him left in the game. Imagine what him and Aurier would get up to with their one brain cell.