Bebe's arrival comes just weeks after he was snapped up by Portuguese side Vitoria Guimaraes on a free transfer, and Gill was frank about the whirlwind nature of the deal that is reportedly worth in the region of £7 million.
Speaking to MUTV, Gill said: "He's a player we've been following, but he really came on the scene in the last week or so.
"We looked at him, spoke to a number of people about him and then went out and secured the deal.
"It's exciting. He's a potential player, and a lot of Manchester United's focus is about getting players who have the potential and then getting them under the great coaching of Sir Alex [Ferguson], Mick [Phelan], Rene [Meulensteen] and other people.
"He can fulfill that potential with Manchester United and I think it's going to be exciting. Let's hope it works out.''
"He'll join up and be part of the first-team squad this season.
"I think he'll probably stay this year. He has to learn English and integrate into Manchester United, and he's really come from nowhere in a lot of respects."
