Lance Franklin completed a high-intensity training session on Tuesday and has given himself every chance of playing in this weekend's clash with St Kilda – a side midfielder Harry Cunningham believes has been "flying under the radar".

Franklin, who is battling a back injury, was monitored closely by Sydney officials as he began some light kicking before moving onto running – done at about 80 per cent – and even minor contact with teammates.

He's back: Swans forward Lance Franklin trains at the SCG on Tuesday. Credit:Getty Images

Gary Rohan, Tom Mitchell and Ben McGlynn were also getting kilometres into their legs at training on Tuesday at the SCG. A decision will be made on Wednesday as to whether they return to the starting line-up for Sunday's game.

Cunningham kicked with Franklin at different times during training, and said the possible inclusion of the star forward as well as other returning players was a big boost.