I don't actually see any young lads ready to step up into front row any time soon.
TNW looks more like a loose than outright prop to me, although could be proven wrong. He'll have to fill out a fair but more at his height.
Leo Aliyu is athletic but again not massive; Oladipupo has great size for his age but has loads of development in him still. Young Stelfox impressed me a couple of weeks ago but again he's years off.
Hudson could be good but looking like he's going to struggle to make a first team appearance this year, very much a project. I actually like the look of him but he's coming from a long way behind developmentally for his age, and another with ongoing injury issues it seems.
We may have one or two backrowers that might transition but the fact we play Donaldson or Goudemand at prop says it all - we do lack quality, made worse when Holroyd can't stay fit for long stretches.