Morgan has pledged that he would love to stay with the Blades for the rest of his career.
Morgan said:"It is special to get to 150, it soon comes around. It means a lot to me because clocking up the games must mean i've done something right.
"I've really enjoyed my time here, have some fantastic memories - the promotion season being the best - but we've had to ride the rough with the smooth aswell."
He adds:"I signed a new contract in the summer and i've got 2 more years to run on it after this which will take me up until i'm 33. I'd like to stay here and play out the remainder of my career."
Morgan will reach his 400th career game in the not too distant future. He has been with his hometown club Barnsley aswell.