The 23-year-old previously spent two years at Falkirk, leaving a year ago, but has struggled to pin down a regular place at the Championship side and was loaned out to Barnsley and then Carlisle.
Higgingbotham, whose deal is subject to what Motherwell called "registration formalities", will add creativity to Stuart McCall's attacking options following the sale of Jamie Murphy to Sheffield United.
He said: "I am really pleased and excited to be here and I want to thank the gaffer and all the players for making me feel so welcome."
