Dwain Chambers is set to be selected for London 2012 when the athletics squad is named at 1400 BST on Tuesday.
He can compete after the British Olympic Association policy of lifetime bans for drug cheats was overturned.
Chambers won the Olympic trials on 23 June, but did not run in the 100m at the European Athletics Championships.
Asked if Chambers would be picked for London 2012, UK Athletics coach Charles van Commenee told BBC Sport: “It’s a likely outcome.”
Chambers, 34, was given a two-year ban after testing positive for the designer drug THG in 2003.
He won the 100m trials in Birmingham in 10.25 seconds – seven hundredths of a second outside the ‘A’ qualification time required. However, he ran ‘A’ times last summer, which the selectors can take into account. Team GB can name three 100m sprinters for London 2012.
Adam Gemili, 18, is the only confirmed 100m competitor after running the A-standard and finishing in the top two in the UK trials. The final Olympic place is likely to go to James Dasaolu, 24, who has run the ‘A’ standard this year.
One of the toughest choices facing UK Athletics is which three athletes from five contenders to pick for the women’s 800m.
Marilyn Okoro and Emma Jackson have run the ‘A’ standard this year but finished fifth and seventh at the Olympic trials, won by Scotland’s Lynsey Sharp, who also claimed a European silver medal.
Former world and European 800m bronze medallist Jenny Meadows’s hopes suffered a setback when she pulled out of the 800m in Helsinki after aggravating an Achilles injury. She says she will appeal if not selected.
Jemma Simpson did compete in Helsinki but finished seventh in the final.
Van Commenee said he was bracing himself for a “heap of appeals” from athletes after Tuesday’s announcement.
“The women’s 800m is a very difficult one,” Van Commenee said. “There may possibly be some back-up places for the relays to debate too. I can’t see many other big issues really.”
