Neil Harris has spoken of his delight to have secured the capture of Frank Fielding at The Den.
Fielding became the boss' second summer signing on Thursday afternoon, following his departure from Bristol City after six years at Ashton Gate.
"We're obviously delighted - Frank is a player we've chased throughout the summer," Harris explained to millwallfc.co.uk.
"His pedigree at this level is outstanding, he's a fantastic professional and he's great to have in the dressing room.
"He's very important for us in that department, because he has played plenty of important games in his career. We're really pleased to bring in a top goalkeeper and team player."
Fielding lists Derby County and Leeds United alongside The Robins as his former clubs, as well as 12 England Under 21 caps and a call-up to the senior national setup in 2010.
"Frank has played with and for some people I know, and they've given me great character references," the manager explains.
"It's important as a goalkeeper at our club to be a big personality, and he wanted to come here and play.
"He is desperate to play games, to continue to prove himself, and at 31 as a goalkeeper is just coming into his prime. He's a northern lad who wanted to come here to London, he wanted to come here after fighting for promotion with Bristol City, and that's vital for us."
Harris says he is pleased to secure a player with "phenomenal" professionalism and workrate - claiming the club are solely seeking players of a similar ilk.
"Frank had some serious misfortune last year, which hopefully now is in the past. His record before that was outstanding, and you want your players in as early as you can.
"It's not always possible to do that. This one has been a case of to-ing and fro-ing on various bids, but Lee Turner [goalkeeping coach] will get him up to speed, and apparently his work ethic on the training pitch is phenomenal.
"That's exactly what we want to recruit this summer - top characters, top trainers, and those who have the same training and game mentality."
The manager finally explains the process behind transfer dealings during this summer, and is adamant of continuing to build on the two recruits made thus far.
"There are so many elements that go into a deal these days.
"It's not just about money or agents - it can be about opportunity to play, family life, managers meeting players - there is always so much to consider.
"Things don't just happen overnight - this window particularly has been very slow so far - but it is about the right players at the right values. It has been very important to bring in additions to the group such as Frank and securing the deal for Alex Pearce, and we'll continue to build that way there."
The full interview with Harris can be viewed on millwallfc.co.uk.