If they're willing to sell Pogba - and Chelsea being interested - we should be after him. I was quite happy to read that Chelsea were linked with Kroos a few weeks ago as it would have meant a slow midfield 2 for them (if Cesc was paired with him) but Pogba is a different type altogether. Do not want to see him at Chelsea.
Would people definitely take Vidal ahead of Pogba? He's currently the better player and at his peak but what, 5 years older or so? The biggest downside I see to Pogba is his agent. But the kid is an outstanding player.
Also, don't believe we're put off the Vidal chase because we're quoted a price that's probably below his MV at 34m. That's just silly. It's like not buying Di Maria for 35m.