The former Scotland and Everton star admitted he was impressed by Geordie striker Adam Campbell and Toon left-back Paul Dummett.
McCall said: “If there was anything I saw he said to stay in touch.
“He said a few of them were going out on loan to league clubs. We know the young striker (Adam Campbell) has played at under-20 level.
“Newcastle also have some under-21 games, so we will have to see.”