Millwall 2025 summer transfers: Every confirmed signing and sale for Alex Neil's side

Millwall experienced a busy summer transfer window, making 11 new additions before the market slammed shut on September 1. 

The biggest outlay of the summer belonged to the £5m they spent to recruit Josh Coburn following his successful loan spell at The Den last season. 

The Lions have made a mixed start to the 2025-26 campaign, having won two and lost two of their opening four Championship matches. 

Millwall will hope that their summer business can help them go a couple of steps further than last season's eighth-place finish.

Here, Sports Mole tracks all of Millwall's summer transfer business.

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Millwall confirmed transfers in: Summer 2025

Josh Coburn (£5m from Middlesbrough)

Max Crocombe (free)

Zak Sturge (undisclosed from Chelsea)

Massimo Luongo (undisclosed from Ipswich Town)

Steven Benda (loan from Fulham)

Alfie Doughty (undisclosed from Luton Town)

Joel Coleman (free from Bolton Wanderers)

Caleb Taylor (undisclosed from West Bromwich Albion)

Derek Mazou-Sacko (undisclosed from Rodez AF)

Thierno Ballo (loan from Wolfsberger AC)

Will Smallbone (loan from Southampton)

Millwall confirmed transfers out: Summer 2025

Zian Flemming (£7m to Burnley)

George Honeyman (free to Blackpool)

Aaron Connolly (free to Leyton Orient)

Murray Wallace (free to Huddersfield)

Duncan Watmore (free)

Shaun Hutchinson (free)

George Saville (free to Luton Town)

Liam Roberts (free to Mansfield Town)

Dillon Addai (free to Bromley)

Japhet Tanganga (undisclosed to Sheffield United)

George Evans (loan to Hartlepool)

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How much have Millwall spent and earned during the summer 2025 transfer window?

Millwall total spend summer 2025: £5m

Millwall total income summer 2025: £7m

Millwall total net profit summer 2025: £2m

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Latest Millwall transfer rumours

You can find a complete list of the latest Millwall transfer rumours by clicking here.

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Millwall squad

You can view Millwall's current squad ahead of the 2025-26 season by clicking here.

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