Dan Nlundulu returns to the Completely-Suzuki Stadium for a second time, after the club agreed a short-term loan deal with Southampton FC until January.
The 23-year-old is the third signing of the window following the arrivals of Dan Adshead and Tom Bradbury, supported by our partners at the Little Jet Company.
"We're delighted that Dan is back in the building," said Head Coach Wade Elliott.
"He has been our number one target at the top end of the pitch and since he went back to Southampton last season we have maintained a dialogue with him.
"We made it clear the role we saw for him this season and it's great that we have not only got him in, but also that he has arrived early so our thanks go to Southampton for their co-operation with that. It means that he can have a full pre-season with us and I'm sure he'll be ready to go by the time of our first League game."
Wade explained that Dan is now over the injury problem that cut short his loan spell to Cheltenham Town last season but having made such a positive impression in his four matches for the Robins, the coaching staff had been keen to get him back again as soon as possible.
"We've worked hard to maintain a good relationship with both Dan and Southampton," said Wade.
"I think as a club we made a good impression on Dan when he was here last season in terms of the way we work and our dressing room."
"He fitted in well last time, he knows what we're about, he knows the standards we set in the dressing room and what we expect, and he was fully a part of it last year. He trained well and got involved with the rest of the squad and I know the supporters took to him last year as well.
"I think this signing will give everyone a lift and this is a good one to show everyone that we're telling the truth when we say there is a lot going on behind the scenes.
"I know a few people at Southampton, and they tell me Dan is in the best shape they have ever seen him, so I am excited because I know he is hungry to come in and do well.
"It was frustrating for him last season because he'd only been with us for three or four weeks when he got injured and you could see that he had just got a real understanding of how we work and what we are about. He was really ready to take off so I felt for him but the beauty of it is that he is coming back to somewhere familiar, and he can pick up exactly where he left off. He's been well looked after at Southampton, and they are in constant contact with our medical staff so there is a programme in place for him and I'm excited to see him take that onto the pitch."