i try to keep out of these debates as there are so many variables and quite often a few WUM's looking to see if they can grab a bite or two during the window...
but, defoe for me would seem an excellent deal depending on why he is coming.
in my heart i am hoping for some kind of 'see the season out as stand in/impact sub striker getting to know the lads as you move into the coaching side' deal, fitness i very much doubt will be a problem, ability will never be in question, age might work against him but then this is a couple of levels below his 'usual' so should balance out.
both stewart and broadhead have ability but someone like defoe to 'fine tune' a few pointers would probably add a few goals to their tally and might just be that 'extra yard' we would need for broadhead to take a chance and sign for us permanent (rafa getting sacked might put the mockers on that mind) and the younger lads can only benefit greatly.
so, finish this season and maybe next as a 'super sub' type player (pretty much his recent role north of the border) while gaining his badges, if any are needed, as he settles into his new role...sounds perfect for all parties to me.