Tony Watt has returned on loan from Dundee United until the end of the season.
In his first spell at the club, the forward made 70 appearances in the claret and amber and found the back of the net 19 times.
“If you look at Tony’s record, he is available to play all the time,” manager Stuart Kettlewell said.
“He is a player who has done well here with goals and strong performances. We jumped at the chance to bring him back to Fir Park and Tony himself was desperate to return.
“Tony had lots of other options, both home and abroad, but he was fixated on coming back here.”
Watt left Motherwell for Dundee United in 2022.
“It’s so good to be back in the building,” Tony Watt added.
“I was itching to join Motherwell again and can’t wait to get stuck in.
“There’s obviously people who may not be too happy to see me back. I need to prove myself here and get people back on my side but that target is firmly set in my mind. I feel fit. I’ve been training and I have a full pre-season under my belt.”