Nope...he is alleging a criminal act where no one has been accused of a criminal act. It's not admissible. Not only that she didn't tell anyone to delete anything...
FBI Director James Comey said in a
July 2016 statement that the FBI investigation "found no evidence that any of the additional work-related emails were intentionally deleted in an effort to conceal them."
Comey added in a later congressional hearing that the FBI learned no one on Clinton’s staff specifically asked the employee to delete the emails following the
New York Times story and subpoena. Rather, the employee made that decision on his own.