As noted in the other answers you cannot offer the evidence after the trial. In some instances newly discovered evidence can be submitted after trial in a motion for a retrial. However, this evidence is not newly discovered because you are aware that it exists. You might consider serving the witness with a subpoena to testify live at the hearing. This might prompt the witness to complete the report on time. Otherwise you need a continuance.
As noted in the other answers you cannot offer the evidence after the trial. In some instances newly discovered evidence can be submitted after trial in a motion for a retrial. However, this evidence is not newly discovered because you are aware that it exists. You might consider serving the witness with a subpoena to testify live at the hearing. This might prompt the witness to complete the report on time. Otherwise you need a continuance.
As noted in the other answers you cannot offer the evidence after the trial. In some instances newly discovered evidence can be submitted after trial in a motion for a retrial. However, this evidence is not newly discovered because you are aware that it exists. You might consider serving the witness with a subpoena to testify live at the hearing. This might prompt the witness to complete the report on time. Otherwise you need a continuance.