A tweet from Norman Smurthwaite says that there will be no announcement of new players on Monday.
The Valiants are widely expected to announce a number of signings before the players begin pre-season training at the weekend.
Local media had speculated that some signings could have been made on Monday.
However, the Vale owner explained that medicals have delayed the unveiling of the players but there will be an announcement on Tuesday morning.
His tweet reads:
The medicals are taking longer than planned so announcement will be in morning now 1 more sleepless night but worth it sneaking them out now
— Norman Smurthwaite (@smurfpvfc) June 27, 2016