I dont think getting Bastian for free is a mistake, certainly not bigger than Hernanes for 11m and giving him 3m/year.
Just because you can get a player for free doesn't make it a good addition, or barely a good deal if said player is finished and has had extensive injury issues for years. Also free is free to a point, if the player himself would require 4-5m salary then it's hardly ideal, funds you can use for more ready player.
I repeat, Hernanes was a bad deal, but using him as measuring stick for another possible signing doesn't in itself make that signing a good one.
I have nothing against Schweinsteiger, a healthy and useful version of him would be nice addition, but there isn't much that indicates that would the case. I wasn't kidding when I said he looks more like a player that belongs in charity games, or MLS...
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