Striker joins for an undisclosed feeMillwall have completed a deal to sign Harry Smith from Folkestone Invicta for an undisclosed fee.
The striker has been on trial with The Lions since the middle of July and impressed in pre-season friendly appearances against Dulwich Hamlet, Dover Athletic and Greenwich Borough.
Smith, 21, found the net 13 times during Folkestone's 2015/16 title-winning campaign and was also prolific in front of goal when with Sittingbourne in the first-half of the same season.
Discussing the arrival of the 6'5" forward, who has signed a two-year deal, Neil Harris said: "We are delighted to get Harry on board. He was flagged up by our recruitment department and has done well since he came to us during pre-season.
"Harry has the attributes to be a very good footballer but there is still a lot that he has to improve on as a player. Physically he is a good size but his technical abilities are clear for all to see as well, so the potential is there.
"But potential is only one thing in football and it takes time to fulfil it. He will have to work hard with us and at the same time we will have to be patient with him as he looks for chances to get into our first team."
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