Auston Matthews admitted Friday morning that he felt “concussion symptoms” after an accidental collision with teammate Morgan Rielly Dec. 9 during a game against Pittsburgh.

Matthews, who returned to practice Friday, his first full practice with the team since his injury, revealed that it was indeed a head injury that kept him sidelined the last six games.

His status was listed as day-to-day during that span, with the cause being an “upper body” injury.

“I collided with Morgan … the next day I was feeling weird,” Matthews said after his workout Friday morning.

“I went through the concussion protocol, and you take that pretty seriously.”

When asked if he suffered a concussion, Matthews said “what was I feeling ? … concussion symptoms, but I won’t go further than that.”

Matthews remains a game-time decision for Saturday’s game in New York, which will be the Leafs’ final game before a four day Christmas break.