so its certain he wants to leave? It will be hard to find new LB, but we can surely improve on him, in attacking phase he is great, but we could do better in defense. Imo he was the best when playing as wing back when he had three CBs behind him. Not saying he is trash, he is great player and it will hurt to loose him, but we cant force him to stay and its not a coincidence that we played Asa when defensive stability was needed. For me its really big disappointment I have followed this guy for 2 years before his transfer to Juve and always wanted him here.
We should have a look at left back from Monaco Jorge - seems like a next big name defensive LB.