Port Vale have signed three more players ahead of the forthcoming npower League Two campaign.
The Valiants have signed 26-year-old former Wales international defender Richard Duffy on a two-year deal following his release by Exeter.
Goalkeeper Chris Neal, also 26, has signed a two-year deal after failing to agree a new contract at Shrewsbury while former Crewe captain David Artell, 31, has joined on a 12-month deal with an option of a second year for the centre-half.
The signings are the second trio of players to move to Vale Park this week after winger Jennison Myrie-Williams, striker Ashley Vincent and midfielder Darren Murphy arrived on Monday.
"Each player brings their own experience to the squad," Vale manager Micky Adams told the club's official website. "Richard is a player I know of old who has experience of playing in higher divisions as well as at international level. David is an experienced leader who has been there and done it at this level and I am certain his experiences with Crewe will be fresh in his mind as he prepares for the new season.
"Chris also experienced promotion last season and I was impressed with him when he played against us in our rearranged fixture against Shrewsbury last season. He is still very young in goalkeeping terms and we believe he has a lot of potential."