Presumably McKinnon feels he needs a ball winner in the middle of the park. Someone to sit in and do the dirty work while Callachan/McCord/Craigen/Anderson go forward. We could certainly benefit from a bit more dig against the likes of Hibs and Rangers. Both Callachan and McCord have a hint of the 'Gerrards' about them when it comes to making tackles.
A degree of my fangirling around Davo is tongue in cheek, but I do think some people are going overboard. He's a limited footballer, but he carries out his role very effectively.
He's a few years more experienced and more mature than he was the last time he played for us, and I'd be really interested to see what he can bring to the table.
I wouldn't be breaking the bank to bring him in, but if he performs well in training, and he's after reasonable wages, I think he'd give us something we don't have at the moment. I would prioritise another forward ahead of that though, for sure.