Neath will delay naming their team for the game against Pontypridd at The Gnoll on Monday, 30 December until the day of the game.
Having picked up a number of injuries during the 23-14 defeat by Swansea at St Helen's on Friday night, coach Lyn Jones will receive fitness reports on Monday morning.
Former Wales hooker Barry Williams damaged his ribs at a collapsed scrum, while outside half Lee Jarvis took a blow to the head in a tackle. Other players are also carrying bumps and bruises.
Neath face Pontypridd on Monday (kick-off 2.30 pm) and then meet Cardiff in the Celtic League semi-final at The Gnoll on Saturday (kick-off 5.30pm). Tickets for that game are available from the Neath club (01639 769660).
The winners of the semi-final on Saturday will meet the winners of the first semi-final, between Munster and Ulster on Friday night, at the Millennium Stadium on 1 February.
The last five years have been an emotional rollercoaster on and off the pitch for RGC1404. Promotion to the Principality Premiership was the culmination of five years of hard work and investment in North Wales. WRU TV caught up with prop Joe Simpson, who was one of the first intake of WRU North Wales Academy players in 2010.
Ebbw Vale captain Damien Hudd picked up the biggest accolade of the night at the 11th Principality Premiership Awards Evening held at Principality Stadium, after leading his side to the title for the first time.
Wales assistant coach Robin McBryde is predicting a tough battle against England on Sunday despite the fact they may not be considered to be at full strength. Players will be out to impress Eddie Jones which makes England a dangerous proposition, he says.
Wales U20 captain Tom Phillips and performance psychologist Dr Rich Neil explain why spending three days at Monmouth RFC has further strengthened the togetherness of the squad ahead of the #WorldRugbyU20s