Manager Paul Cox will look at a number of potential trialists as he continues his squad strengthening ahead of the big kick-off at Sixfields against Northampton on August 9.
"I anticipate that over the next two games, there will probably between four and seven that we’re going to have a look at," Cox told his club's official website.
Two new arrivals at the First Call Stadium recently both share a surname, defender Amari'i Bell arriving on loan from Birmingham City and midfielder Fergus Bell signing a permanent deal after a spell playing in Italy.