Of course Ewen wants the job as Head Coach of the Wallabies.
Every coach wants to be the Top Dog in their land.
Every sailor who joins the Navy fancies their chances of being the Admiral.
Every boy racer wants to win Bathurst, Jockeys the Melbourne cup etc.
It is human nature. Along lifes little journey distractions come in and the gun fighter pilot decides that being the Wing Commander is no longer where he wants to be, so he flies for QANTAS or the RFDS, or retires to grow tomatos in the Darling Downs.
Like everyone, Link would want to get to the top job when he knows he is ready and capable to do the job, and conditions are best for him to succeed.
If any bridges are to be burned on the journey to the top of the mountain, then let someone else start the fire, so if it doesn't all work out there is an effective route back down the mountain. The burned bridge will have to be reconstructed by the person who burned it not you.
There is little point in Link being at the front of the cavalry charge towards Fortress St Leonards because if too effective a hatchet job is done by him, then lookout in 2-3 years for the same to be done to him by Link #2 whomever that is. A metaphorical dragging of Link, kicking and screaming, is the only way he should consider the St Leonards move while he is still contracted elsewhere.