Go Racing, the broadcasting business in which Arena has a one-third stake, has received acceptances for its ?i400m ($573m) broadcast deal from courses representing more than 70 percent of off-course betting turnover.
Arena said it would make further details available next Tuesday, and that trade would resume in its shares at the same time.
The company's shares were suspended at 95 pence ($1.40) a week ago pending the Go Racing deal.
The consortium also includes satellite TV group BSkyB, TV broadcaster Channel Four, and UK-based cable group NTL.
British newspapers said Arena was expected to announce details of a fundraising of up to ?i80m ($118m) next Tuesday to help pay for its share of the deal.
But a spokesman for Arena declined to comment on the amount involved.
"It's not a secret that we'll have to seek funds to finance the Go Racing deal. Any further details about the deal will be released next Tuesday," he said.
Arena will announce its results for the nine months to December 31 at the same time.
Go Racing had effectively set a May 11 deadline for the racecourses to accept its bid for the interactive and terrestrial TV rights for 10 years.
Go Racing has been negotiating with racing authorities and the tracks for five months, although a group called GG-Media recently made a late charge for the TV rights to smaller, independent tracks.
Reuters
Racecourse and media group Arena Leisure Plc said today its Go Racing consortium had signed sufficient UK racecourses to advance with its plans to control TV rights for horse racing in Britain.
