Northampton director of rugby Jim Mallinder believes they needed to make a change to their coaching set-up, hence why Alex King departed.
In a shock last week, Saints revealed that former England fly-half King would be leaving the Premiership club with immediate effect.
Since then Northampton have defeated Montpellier at Franklin's Gardens in their Champions Cup opener to end the week on a high note.
"This is my tenth season and we haven't made many changes to the coaching set-up," Mallinder told BBC Sport about King's recent exit.
"We made one a few years ago and went on to win the Premiership and a European competition. Hopefully this little change will do the same."
"In the short term we'll [replace King] in house," Mallinder added to BBC Radio Northampton.
"Alan Dickens is an outstanding coach, he went with the England Saxons over the summer and picked up lots of ideas.
"He does love the attacking side of the game and sees this as a big opportunity for him to step up.
"We'll also be looking to bring somebody in. Whether that's an attack or defence coach is still to be decided."