06:56 AM ET 05.17 | It appears Patriots tight end Rob Gronkowski will soon be going under the knife yet again.[Gronkowski] is "likely" to have that fourth surgery on his left forearm performed at some point next week, according to a source with knowledge of the situation. As we reported last week, this surgery was going to take place no matter what. The exact date, however, has not yet been determined. To this point, according to the source, there have been no signs of the pesky infection that's plagued Gronkowski's recovery process in blood exams taken. ... If there are still signs of infection, that sets Gronkowski back, and puts him at jeopardy for missing the start of the season, and perhaps more with a fifth surgery likely after that.