That's valuing Suarez at 80m, which at 30 years of age is more than a bit generous.
If we were resigned to losing Coutinho Rakitic would actually sweeten the deal somewhat. He isn't Coutinho of course, but if we were imagining playing Phillipe deeper this season anyway (behind a front 3), then he does have a lot of the attributes we would like to see, and is clearly a top player in his own right. Yes, he is 29, but he still has plenty of pace. He has played in excess of 50 games a season for Barca for the past 3 years so he is clearly very durable too. Rakitic won't be able to play a more advanced role like Coutinho as part of a front three and if we were to countenance the move then we would have to consider a top, or at least up and coming replacement.
I would rather this didn't happen at all, but if it did, taking Rakitic would make sense.