Lapslie and Sembie-Ferris travel to Crewe.
Both have been in good form for the club's U21s team so far this season and have been rewarded by stepping up into the first team squad for the match against the Alex.
Tom has had a taste of being with the first team squad previously, having travelled to Bournemouth in December 2012, whilst this is Dion's first time travelling away with the senior squad.
The winger has made a big impression since signing from St Neots Town in November of last year.
Their progression to the first team squad matches that of Macauley Bonne, Frankie Kent and Sammie Szmodics in the last year, along with Drey Wright and Alex Gilbey prior to that.
We will have the full squad later on Friday.