By John Lyons

ON THE MOVE: Tyler Walker has joined Portsmouth on loan from CoventryPICTURE: AlamyTYLER Walker is determined to do everything in his power to spearhead a Portsmouth promotion push after joining on loan for the rest of the season.The 25-year-old striker has found starts hard to come by at Championship outfit Coventry this season, in large part due to the form of Sky Blues forwards Matt Godden and Viktor Gyokeres.He therefore decided it was in his best interests to drop down one rung of the ladder in a bid for regular first-team action at Portsmouth. At Fratton Park, ...