Logan arrives from Leicester on a one-month loan deal and Rovers boss Dave Penney has revealed he will start against Oldham on Saturday ahead of regular first-choice keeper Luke Daniels, who is also on loan from West Brom.
Senda, 29, arrives on non-contract terms having been a free agent.
The former Wycombe, Millwall and Torquay right-back has trained with Rovers for the past couple of days and is looking to reignite his career having struggled since sustaining a serious knee injury in 2008.
He also goes straight into Penney`s squad for this weekend.
Meanwhile, chairman Nick Higgs has dismissed speculation that Rovers will go into administration even if they are relegated from League One.
Source: PA
Source: PA