The delighted Academy graduate made that comment in a post-match tweet, after coming on as a 78th-minute substitute for the Three Lions in their 1-0 away win over Iceland in the UEFA Nations League.
The score was still 0-0 when Greenwood replaced Harry Kane in Reykjavik and his entrance seemed to improve England's attack, with his direct, proactive style yielding a corner for his side a few moments later.
The deadlock was finally broken in the 89th minute when Manchester City forward Raheem Sterling stepped up to convert a penalty after his shot in open play was handled.