I will be amazed if they let him go. Bookies change odds to relieve mugs of their cash. As an example, my team, according to bookie odds, would already have Rafa and Howe in charge. Now, everybody with an IQ higher than a barstool, knew that they were talking shite, but, those mugs I was talking about put a bet on. If he has fallen out then maybe, but not because their season isn't tip top this year.
As a betting trader I can tell you that is untrue, odds are formed and changed purely on how much is being staked on an outcome occurring. For many reasons bookies cannot just simply adjust odds at will, something called rounding being the biggest. Another reason is that betting exchanges (which is essentially a stock market for betting) will reflect the true odds by how much is being traded on buy/sell, bookies have to broadly follow those odds otherwise they will leave themselves open to being Arbed.
All that being said, just because an outcome is trading at low odds doesn't mean it will happen, it's just an indication that the market expects it to happen.