Sure below average players are easy to find, but the point remains determining how efficient this signing is going to be is by looking at the market for what other players are going to be getting. If teams are going to be paying for wins at a significantly higher rate than what Morales is earning, (which is going to be highly likely) it's a good decision by the FO. If you say he puts up 4 WAR in 3 years it's absolutely a good signing, he earned his contract and then some.