There's appears to be a number of people questioning Couts injuries, is that not lack of application if true?
Coutinho has always had injuries every now and then that keep him out a few months, he does tend to take time to come back to full form from injuries, that was before the Barca links, I've never seen anyone on here questioning his injuries like they have for Sturridge etc.
Klopp doesn't strike me as the sort of manager who would tolerate players not putting in 100%, who ever they are, look at how he dealt with Sakho/Balotelli etc, also, this is a WC year, so he will be motivated, to get in the WC and force a move, he has to prove his worth to Barca if we're asking £120+ million.