If this happens it would mimic the 07 summer signing of Sagna. Eboue (like Gibbs) was an average defender but doing quite well, great going forward...and Wenger decided to fix something that wasn't broken by bringing in a better RB in Sagna. Then he pushed Eboue as a right-mid and it worked to a certain extent, we went on to have a good season and width and overlapping runs of Eboue and Sagna allowed us to keep a pretty good shape.
The reason this Santos thing won't work is there's absolutely nothing he offers you over Podolski. With Eboue, at least he had good pace and a decent enough cross. Santos doesn't keep his width, waddles in-field and starts tapping it about (poorly) like he's one of the CMs. Waste of space - not needed. Left side was doing well recently or, at least, looked like our best bet in terms of getting a goal. Podolski in form and Gibbs overlapping was becoming a decent partnership. Should be interesting to see what happens with Monreal now. He's still only young but we need Oxlade to take off. That would make our options out-wide a lot stronger. Cazorla should be constantly playing on the right but Wenger's trying to cram Wilshere and Cazorla in the same space and it's not working.