Newcastle boss Steve Bruce says Allan Saint-Maximin's ability is "scary" after the winger put in a match-winning performance against 10-man Southampton.
Saint-Maximin scored the only goal of the game in the closing stages, pressuring Yan Valery into a mistake before tucking home beyond Alex McCarthy.
The win moves Newcastle eight points clear of the relegation zone with nine games to go.
"I said when Saint-Maximin walked in he will excite people," said Bruce.
"His natural ability is scary. He has a bit to learn too, and if he does, if he sorts the other bits out, we have a hell of a player on our hands.
"He is always a threat, wants to get past you and that is a dying art. He has that natural ability in abundance."
Southampton had been reduced to 10 men midway through the first half when Moussa Djnepro's yellow card was upgraded to a red following a VAR review of his foul on Isaac Hayden.