It’s “a” report from one news media organization.
It’s based not on personal knowledge but instead sourcing.
The sourcing is anonymous.
It’s MASSIVELY unlikely to involve any leakage from the Mueller OSC.
Beyond the Mueller OSC, the FBI is not exactly pure as the driven snow on its info. Take, for example, the leakage out of the EDNY office to Rudy Giuliani’s bunch about the supposed ‘hundreds to thousands of previously undiscovered’ emails of Hilary Clinton that were said to be found on the laptop in the home of Antony Weiner and HRC aide Huma Abedin. Turned out that there was NOTHING in the way of ‘new’ or ‘previously undiscovered’ HRC emails on that PC.
Even if true, is the information even accurate?
If both true AND accurate, strickly speaking the most it possibly could do is put THE CELLPHONE in Prague, not Cohen.
Even if entirely true and accurate AND Cohen was in Prague, it’s hardly any sort of “big” news unless Cohen was truthful about with the Mueller OSC interviewers or FBI interviewers or both if both pursued this line.
If Cohen was in Prague and told the OSC or FBI different, it’s entirely NOT “big”, since all it does it render Cohen even more of an unreliable witness than has already been determined.
I am entirely indifferent as to whether it’s true or not true because it adds nothing of real use to any criminal charge or impeachment bill against President Trump.