Liam Bradley has left his post as selector to the Derry senior football team, due to other commitments.
Bradley, the father of Oak Leaf stars Paddy and Eoin Bradley, has opted out due to his work with his native club Glenullin.
Meanwhile, Derry manager Paddy Crozier has made four changes to his side for Sunday's NFL Division 1B clash with Westmeath (Celtic Park, throw-in 1.30pm).
Barry Gillis returns in goals, as part of a rotation policy with Shane O'Kane who started in last weekend's win over Galway. Former All-Ireland minor winner Ruairi Murray will make his league debut at right corner back, filling in for Kevin McGuckin, while there are also starts for Enda Muldoon and Patsy Bradley.
2004 All-Star Muldoon will be making his first start of the season - he replaces Conleth Gilligan at wing forward - and Patsy Bradley retains his midfield berth, as Fergal Doherty has a rib injury.
Doherty may make the bench alongside Kevin McCloy, who is back from an ankle injury, and Gavin Donaghy, who returns from suspension.
Crozier is hoping Derry can continue their early season momentum, especially after the 0-12 to 0-7 defeat of Galway
"Things have been going well since we beat Queen's in the McKenna Cup and getting our league campaign off to a winning start in Galway was fantastic," he said.
"They were one of the favourites to top the division and they reached the final of the competition last season. Without a doubt it was one of the best performances we've seen from this Derry team for quite some time."
DERRY (NFL v Westmeath) - B Gillis; R Murray, G O'Kane, J Keenan; P Carton, SM Lockhart, L Hinphey; J Conway, Patsy Bradley; R Wilkinson, C Gilligan, M Lynch; Paul Bradley, Paddy Bradley, Eoin Bradley.