There's a lot of reasons why it's highly unlikely we'll sign Benzema, apparently he wants to stay in Spain, he's Madrid's only out and out striker and Benitez wants him to stay (and has said he will), he's under contract until 2019 and Real Madrid have noone else lined up up front.
Can't see this happening, IMO we're chasing the impossible again and will end up with noone, which would be a very poor show in the transfer window by us when we were nowhere near the title last season and other teams have further strengthened. Once again though the season is almost upon us and we have barely done any business, it's shambolic for it to happen again tbh.