I hate to be the bearer of bad news and I would implore you adopt the stance, don't shoot the messenger, because Jack is not very good.
He was a disaster when Rogers bought him and played him in a couple of CL qualifiers and he sold the jerseys both games. Not the best start. He then got games and was a bomb scare. He is prone to lapses in concentration and can drive out of defence as if he's Beckenbaur, then realises he's Jack Hendry and loses possession, causing mayhem.
He can look good for spells and we all hoped he would push on, but he never did.
Now, you need to bear in mind his catastrophic start seriously did his confidence. Maybe he was trying too hard to rectify and it just went. A new start might be what he needs. I hope it is but I would be lying if I didn't say he was awful with us. But, Samaras was gash with City, but great for us.
Sammy was good mind. Jack? Not so much.
Anyway, could you let me know how the lad gets on? I hope he has learned and improves.