The phrase "available to replace the" is correct and usable in written English.
It can be used when discussing options or alternatives that can take the place of something else.
Example: "We have several models available to replace the outdated equipment in our office."
Alternatives: "ready to substitute the" or "on hand to take the place of".
It would mean that a healthy heart had become available to replace the scarred, useless muscle in his chest.
Climate change is wreaking havoc on company supply chains, and cost-competitive renewable technologies are available to replace the biggest climate change culprit: fossil fuels.
Piers Morgan, who has had a number of public spats with Clarkson over several years, also weighed in to suggest he would be available to replace the presenter.
The standard pizza base was thin and crispy, with a "cheesy bites" option available to replace the standard crust, with tasty individual cheesy dough balls.
But no other currency is available to replace the dollar, and the idea of a basket of different currencies is doomed.
Thus, phototrophic cell growth requires that a source of electrons be available to replace the electrons that are consumed during biosynthetic reactions.
Within two weeks of the onset of the experiment, nine out of the ten males in one of the male-manipulated treatments died, and not enough animals were available to replace this replicate.
They also said sales would be hurt by the shutdown of some Ford truck plants, which were closed for two weeks to make more tires available to replace those recalled by Bridgestone/Firestone last month.
Unlike most temperate areas, in the lowland tropics there is no community of species adapted to even hotter areas available to replace those species that shift their ranges upslope or poleward.
At higher pH OH− ions are available to replace Cl−in the hexachloro platinic acid since OH− ligand has higher field strength than Cl− in the spectro-chemical series.
Unfortunately I will not therefore be available to replace Rory on the team".
