Marshall scored five goals in 22 appearances for Wednesday while on loan during the first half of the season and with Hull, Leicester and Huddersfield all reportedly interested in the 20-year-old, parent club Stoke have yet to decide on his future.
Marshall told the News & Star: "I loved my time at Sheffield Wednesday, especially playing in front of big crowds. I'm getting more consistent, adding a few more goals to my game and gaining in confidence.
"It is flattering when you hear clubs are interested in you, but I don't get too attached to it.
"My agent is sorting out my future and I'm just concentrating on playing well and enjoying myself."
Marshall, who suffered a broken fibia, dislocated ankle and torn ligaments in the final game of his loan spell at Carlisle last season, added: "Everything will sort itself out - I'm just thankful to be back playing."
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