The pair are both on international duty for the double header Israel and New Zealand. Their World Cup qualifier against the former is tonight before a friendly against the latter on Tuesday.
As they prepare for their Group I clash, Haaland has been seen poking fun at the Rangers midfielder during training.
While it is not clear what mistake Aasgaard made, a clip has emerged showing the goalscorer asking: "Thelo, are you f***ing alright? Are you alright?
"Have you been drinking? What did you do last night?"
Aasgard laughs off the ribbing from his international teammate.
The Ibrox summer signing previously hailed the superstar as he talked about learnng from him on international duty.
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“First of all, (Haaland) is a brilliant character off the pitch. He's a leader,” Aasgaard said. “He's not a senior, I would say, but he's a real big personality off the pitch, and obviously on the pitch he speaks for himself.
"He gave the penalty to me for my hat-trick, and that speaks volumes about his character. Every time I go away, I learn so much not just from him, but from all the players.
“There are a lot of quality players. We've got a really good team. I really enjoy going away, but I just need to focus on this next block of games before the next one, and hopefully I can do it as well as I can. All I can do is just try to take that into the next game. I'm just desperate to do well at this club."