He did NOT identify the source, he simply said where they work and yes he may be asked if they really did work at the NFL. The problem lies in when he starts answering questions about it,is he waiving his right to invoke the Shield Law? Think about Lois Lerner testifying before Congress and she made a statement before invoking her 5th amendment right. Many consider her statements to be waiving that right to invoke the 5th. What are NY State laws on invoking the Shield Law after you've answered some questions on it?....More likely to be on the safe side, his attorneys will tell him to invoke the Shield Law rather than answer ANY questions.
I'm thinking of ways around it. Do you sue Mort as well? Being a public figure, Brady would have to show "NY Times v Sullivan malice"burden to show actual malice, that he knowingly published false information, a very high burden, especially not knowing the identity of the other party. The drawback is that the media, all of them would rally round Mort defending him, regardless of the merits.... Do they also sue a "John Doe" to be named later.? Doing that 'may' open a door to depose Kensil, Goodell and a host of others on Park Avenue asking who they spoke to and did they speak to Mort... A little discovery on their cell phones should help to answer that question...