I do not think Conte is ignoring anyone in the squad. He has assessed what he inherited, has got a winning system and a winning team and really doesn't want to change that unless injuries or defeats force him to. He obviously has a budget and if he and Emanelo identifies someone they think can improve the squad and is attainable they become a target. If you are not in the first team you know you are one of those up for replacement.
My thoughts on Obi Wan are that he is more to Chelsea than just a back up def mid. He is loyal and that counts for lots. He is a leader, he is sociable and pulls the squad together off the pitch much as JT does. He is not a natural def mid and definitely not a playmaker. He should always have been played further forward as his first touch and physical presence are his strengths. I've seen him train live, his 'tekkers' are as good as you'll find. At 29 he can sense a big payday where due to his seniority he'll get a chunk of any fee. He is behind in the queue for a Chelsea staff job. Another club would be a great move for him. I do not think he is pushing to leave, but if the perfect opportunity came for him then I'm sure he realises that loyalty aside he should take it.
Chelsea players seem to become like long term prisoners. They become institutionalised and find it hard to re-integrate back into society. If they are lucky they find a way back.