Kenny Shiels will not be able to call on son Dean for tonight's game at Shamrock Rovers.
Shiels Jnr was yesterday unveiled as a City player after signing an 18-month deal at the club, but he is ineligible to play until next week when it is expected he will make his debut against Limerick at the Brandywell.
In March, Derry lost 6-1 at Tallaght, and Shiels has had both good and bad news going into tonight's game. Ronan Hale, who scored his first Derry goal in that defeat, has extended his loan deal until the end of the season, while Canadian Ben Fisk is also expected to make his debut tonight.
But the game will also be Jack Doyle's last as a City player. Brought in as an emergency full back on loan from Blackburn Rovers, Doyle has been a hit at the Brandywell and his loss will be another blow to Shiels who has seen several players leave the club in recent weeks.
With Aaron McEneff and Nicky Low both ruled out, Shiels admitted that he is struggling to get a team ready.
"It's really bad because we're without Aaron McEneff who's suspended and Nicky Low who's injured," he explained.
"We can't play the players that we have brought in so therefore it will be really tough to get a strong enough side out to play against Shamrock Rovers. It's very hard to go there and get a result."
Fisk and Shiels are just two new players at the Brandywell with more to come in. Hearts striker Ally Roy also expected to join at the weekend.
"They are good players and they will help us in the attacking part of the field," Shiels added.
"They will also give us experience as well which we haven't had for a while."
Dean, meanwhile, can't wait to get started at the Brandywell and he is hoping to help both on and off the field.
"I think every experienced player has got a responsibility to help the younger players if they can," he said.
Shamrock Rvs vs Derry City
Airtricity Premier Division
Tallaght, Tonight, 7.45pm