Again, an agent who is simply in it to make himself as much money as possible, and who doesn't care about his clients won't be in the game for long. There are agents who are in it to make both themselves and their clients as much money as possible though, and those agents are a perfect fit for a player who doesn't care where he is as long as he's racking up coin.
23 in the footballing world is realistically around 12 years from retirement, so in real-world terms a footballer at 23 should have the equivalent ambition of someone in a regular job when they're 53 years old. At that age you're already thinking about a life after work, and you need money for that.
Exactly.
It comes down to how much the player is willing to gamble really. For example, Turnbull could sign a new deal, make okay money for a few years and perform really well before winning a big move down south with triple his wages on offer or even more. But, he could just as easily sign that new deal, not hit the heights he hopes (or get injured) and end up seeing out his deal before moving to part-time football further down the leagues.
Or, he could get that big offer while his stock is high, make the move and guarantee the cash for a few years. Then he either makes it into the team down south, earns a bigger and better deal and progresses from there, or he doesn't make the cut, and eventually returns back to the SPFL to probably get the deal from somewhere that Motherwell were offering in the first place, except he has those triple wage packets from the past few years in his pocket as well.
Personally, even as a Motherwell fan I'd take the deal from down south if it was a substantial pay raise. I have no doubt that, fan or not, if I didn't do well at the club they'd have no qualms about letting me go, so why should I treat it as anything other than a professional relationship?
When I'm 40 and retired with cash in the bank I'll come back and support the club as a fan.