Rotoworld is saying that the Cubs have interest in Felipe Lopez. Let's look at the Pecotas
Lopez: .271/.344/.396 11 HR 59 RBI 23 SB
Riot: .270/.330/.347 2 HR 40 RBI 20 SB
And, in case they're (god forbid) thinking of putting him at 2B
DeRo: .286/.360/.439 12 HR 59 RBI
Clearly Lopez is better with the bat than Riot...however his defense at short is much worse (and it's not like Riot's known for his glove either). If they get Lopez as a utility guy who can spell Riot when he's slumping this would be a good deal.