£20mil (including wages) for a season of Falcao is ridiculously risky. If he had PL experience and wasn't just coming back from a serious injury, then I would say go for it because he's that good, but I dunno. What if he struggles? That would be £20mil that we would never get back.
To put it into perspective, Bony would cost about £20mil as well as £3-4mil wages per season, and with sell-on value.
If I was playing football manager, I would go for Bony in that situation.
On the other hand, if Falcao comes in and hits the ground running, then we would challenge for the title and CL without a doubt.
I still think Borini would do well in our team now. In his first season, his movement always seemed to be amazing but we just weren't able to pick him out. Now our midfielders are much better at picking out runs and I think he would flourish. But really he needed the chance to prove this in pre-season which is why the injury was such a shame. As he hasn't proven himself, we have no option but to get another striker which means he'll probably leave.