McAlear is now preparing for life with the Canaries after a fee, reported to be around £250,000 with add-ons, was agreed.
Burrows said: “It is very much our hope that the player development pathway we provide at Motherwell results in our academy graduates progressing to professional level, then eventually into the first team.
“We had high hopes for Reece. He was getting closer and closer and indeed, played several first-team friendly matches during pre-season.
"We had positive conversations with the player, his family and his representatives about extending his stay.
“However, it was clear this was an opportunity Reece wanted to explore and probably would've explored, when his contract expired at the end of the season, had we not managed to agree a deal with Norwich now.
“This will see the club secure cash in advance, as well as maintaining some economic rights should his career continue to develop.
“It also demonstrates clearly the excellent work of our scouting and coaching staff, and further emphasises Motherwell as the club for young footballers to progress."