Why people bother about what other clubs do is a mystery to me.
But seeing as you cite three cases...
United and FCB, for better or worse, signed a striker.
Chelsea have two back-ups, one of which played extremely well on Saturday. The injured one that caused their supposed crisis also returned in the same match.
So not fantastic examples I'm sure you'll agree
The one we wanted to sign that a lot of fans were fucking livid about?