Absolutely. Southampton came 8th averaging just over a goal a game (41 in 38), along with Stoke, Burnley, Watford etc. We'll do well to score a similar amount....so in reality we're looking at something like one player in say mid-double figures, one on about 10, a couple on 7-8 and a few others...
Yeah, for about 3 minutes in the PL, then he'd be sent off.....
I wouldn't take him on a free. Not good enough, not a good fit for the squad ethic, too slow, not as good as what we have (anyone coming in needs to be an upgrade/improvement). As for unsettling the likes of Wenger and Mourinho...