"On paper, we go into the game as favourites but this is cup football so we will be taking Nortel very seriously," said Watson.
"The Northern Amateur League produces a good standard of strong teams. We found that out when Crumlin United took us all the way to penalties in the Irish Cup recently.
"So we will not be underestimating Nortel at all, and will be treating this just like a league game."
His opposite number, Lee McCartney, will be hoping to use the underdog tag to fire his players up for the game.
"We are really looking forward to it," he said.
"We lost last week to Tullycarnet in the Clarence Cup. We knew it would be tough but I'll admit this was a shock to the system and it was maybe just what we needed.
"Training has gone well all week and the lads seem up for it. We know we are the underdogs but, in a way, this has given us more confidence and with the game being at home we know we have to perform.
"Obviously our priority remains the league, but cup runs are great and we are buzzing for this game."
Intermediate Cup (Third Round) - Saturday, 23rd January, 2016 (kick-off 1:30pm unless stated)
Albert Foundry v. Armagh City
Ballyclare Comrades v. Moneyslane (3pm)
Bangor v. Shankill United
Coagh United v. Newry City AFC
Crusaders Reserves v. Crumlin United
Glebe Rangers v. Knockbreda
Larne v. Downpatrick
Lurgan Celtic v. HW Welders
Moyola Park v. Ards (2pm)
Nortel v. Banbridge Town *TIE OF THE ROUND*
Queen's University v. Institute
Tandragee Rovers v. Barn United
Windmill Stars v. Crumlin Star