Pep Guardiola's Treble winners were dumped out of the competition on Wednesday evening as Isak scored the only goal of the game to hand the Toon a superb 1-0 victory. Haaland, 23, played no part in the match as he was left to watch on as an unused substitute.But he made his way onto the pitch at full-time for a word with Swedish match-winner Isak, 24.And he proceeded to ask the ex-Real Sociedad man for his shirt after handing him one of his own.This led to many people reacting on social media as they viewed it as a sign of respect from Haaland for Isak's talent. One said: "Erling Haaland absolutely desperate for Isak’s shirt. The boy with the world at his feet."Another replied: "Haaland asking for Isak’s shirt there.. He knows who the main man is ."A third added: "Haaland wanting Isak’s shirt. Game recognises game #fanboy."While a fourth responded: "Haaland asking for Isak's shirt. Even he knows who the GOAT is."