Keinan had a medical with the Seasiders last week and is now waiting on a work permit before completing his move from Maccabi Haifa.
The 25-year-old will be Blackpool's first signing since they won promotion to the Barclays Premier League in May and Holloway is expecting Keinan to be able to take part in the club's pre-season preparations in Devon this week.
"Hopefully Dekel will get his work permit in the next couple of days," Holloway told the Blackpool Gazette.
"He'll be able to take part in the other games here in Devon."
Holloway has been looking at Monaco midfielder Malaury Martin, who is currently on trial with the Tangerines, while former Everton and Arsenal striker Francis Jeffers is also reported to be training with the team.