After 2,000 fans turned up for the friendly match against Preston last weekend, 9,000 attended for the first round of the Champions League qualifier against Midtjylland on Tuesday night.
Following a meeting with the local Safety Advisory Group, Celtic confirmed the increased number for the Hammers encounter. They “encouraged by the indicative figure of around 24,500 for the subsequent home game”.
A Celtic statement read: “We were delighted to have our supporters with us last night for the game against FC Midtjylland, and we really look forward to welcoming our fans once again for the match this Saturday.
“We can assure our supporters we will be doing all we can to work closely with the relevant authorities and welcome our fans back in even greater numbers in the coming weeks.
“Details on match ticket balloting for West Ham United will be shared in the next 24 hours, but in the meantime, we ask that you continue to familiarise yourself with our new protocols for reduced capacity matches at Celtic Park.
“We want nothing more than to welcome as many fans back to the stadium as quickly as possible, and therefore appreciate your patience as we continue to work behind the scenes to make that happen.”