I wouldn't rule out Anderson, IF you think he's also part of your future. He's a FA in spring and I'd hate to give up more than a 5th rounder for a possible rental. If you think he could be part of your future and you can do a deal with him then I'd spend more.
He looks solid enough but I agree with "Pack" that I don't know how much better he is than what they already have and it may take him a few weeks to be ready. By then Adams is back and I don't know if you get great value from a deal.
The performance last week by the receivers is certainly hopeful, but I'm still not convinced that WR isn't still a top need going into the off-season next spring. MVS might be a #2, but doesn't seem like a great route runner. Kumerow and Lazard have teased us but I'll believe in them more if they keep this up for another 10 weeks. Allison to me is just a #4 possession type guy. They have good moments and hopefully they'll have more of them, more consistently. I hope I've been wrong on them - we'll see.
Shepherd just doesn't look the part. Not fast and not particularly quick. It would be nice to have a better return option and a more well-rounded slot receiver type to add to the options on offense.