How can anyone complain about this deal? He's a good player and he's arriving for close to nothing.
The only two reasons Chelsea loan him under these circumstances are:
1. He need to rediscover his form
2. Building on the relationship with us, in order to land Pogba in the future. (Next summer)
There's no losing for us in this deal. If Cuadrado explodes here we'll have to negotiate with Chelsea, but we got a ~€30m player for free - even if we'd have to pay 30m next year to take him permanently, this is basically a free year.
Also, this is not hindering us from continuing to sign an AM. I see Mkhitaryan coming.