CAITLIN Clark's boyfriend Connor McCaffery has written an emotional message on social media following the sad death of his grandmother.

Marit Smaby-Nowlin passed away aged 80 in Minnesota earlier this week.

Upon the sad news, McCaffery posted a picture of himself alongside his grandma to Instagram.

The Butler University basketball coach wrote, "I’ve been trying to think of what to say and I can’t.

"It’s impossible to put into words how much you meant to our entire family. I refuse to say goodbye, so until we meet again."

McCaffery's post received several kind comments.

Clark added six heart emojis and four prayer emojis.

While her teammate Lexie Hull commented with three hearts.

Veteran sportscaster Ryan Ruocco posted, "Sending you love brother."

Connor's brother Patrick left a

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