(Photo by Gregory Shamus/Getty Images) The Patriots have signed free agent linebacker Sione Takitaki to a two year, $6.5 million dollar contract. The contract has a maximum value of $10 million dollars.  The Cleveland Browns selected Takitaki in the third round of the 2019 NFL Draft out of BYU. Takitaki adds depth after the Patriots lost linebacker Mack Wilson in free agency on Monday. He could also potentially replace Chris…