If this is a goer, you would of course have a concern about 36 year old playing in this league and the fact they havent done it before, that said defending is an art and you can make up ground and space with your mind and positioning as you can with your pace and athleticism. Im always reminded of Weir and Stubbs both played their best stuff well into their 30's.
Ill re-frame this a little instead of thinking this is a temporary fix, i think what we might be buying is time and space, this strikes me as a show of confidence in Branthwaite and Gibson, who are a year maybe two of developing being first team options.
Why put a 25 mill signing in their way. Nothing is cast iron with those two admittedly, but in the current climate Silva for a year or two means we can focus whatever limited funds on central midfield and the right flank and reevaluate next summer based on Brantwaithe and Gibson's progress.
Thats the decision as i see it and that will be up to Carlo and Brands in terms of player development and squad development.