Seller concerns about new assets purchased prior to deal close

Hello Search Community,

I'm negotiating an LOI with a seller and they have been growing at a lot in the last year and expect to continue to do so this year. In order to grow, the company needs to purchase new assets. The seller has repeatedly stated that they "are not comfortable paying for new assets to hand them over at closing". e.g. purchasing new assets during the due diligence process.

Has anyone dealt with this? How do you approach it with the seller and are there any deal terms that could be included to assuage their concern?

I have already proposed an earn-out for new contracts (e.g. the revenue that will come from these assets). They do not feel this will garner them enough return. I also don't want to them to stop investing during the deal process.

Thanks!