Neil Harris was delighted to complete a quartet of January Transfer Window signings on Wednesday afternoon as winger Ben Marshall joined the club on loan from Wolves for the remainder of the 2017/18 campaign.
The winger - who can count Blackburn Rovers and Sheffield Wednesday among his former clubs - will add strength in depth to The Lions' squad in the run-in - and Harris leaned on that fact, plus Marshall's "pedigree" and "experience" in his reasoning behind signing him.
"I'm delighted with the targets we've managed to get through the door. I think we've done really sensible business," he told millwallfc.co.uk.
"We've brought four players in that are all hungry to be involved. They're different sorts of players, from young Harry [Toffolo] up to the experience of Timmy [Cahill] and Shacks [Jason Shackell], with Ben in the middle.
"Ben's a really good age and has been frustrated with his lack of opportunities at Wolves. All four players come with excellent pedigree and character references. They aren't perhaps ready to go straight into the starting XI, but we'll work with them and they'll all have an impact on the team between now and the end of the season.
"With Ben, his pedigree is huge. He has experience at this level and his assists and set-plays will be key. With Aiden O'Brien being out for six weeks and maybe longer, it's vital we have that strength in depth in the squad."
Marshall can play on either side, behind the striker or at right-back - and the 26-year-old's versatility is something that attracted Harris to capturing his signature.
"I see Ben as something slightly different to what we already have. He's certainly a crosser of the ball and played 30-odd games at right-back during his career at Blackburn - the versatility is there.
"I think it really is important we have all different sorts of players. Whether that's in wide areas, up front - players that have different aspects of the game.
"I think he comes into the squad for this weekend. We'll get messages into him before then and we'll have a look at him in training on Thursday to see where he is at physically and whether he is ready to go straight in.
"All four players are going to need extras to get up to speed - it's just what level of involvement and how soon they can have that."