Date of birth
Slovakian winger signed for Pompey from Walsall in July 2016, after the two clubs agreed a compensation package.
Made 13 league appearances for the Blues in 2016/17, scoring once, before a loan move to Scottish Premiership side Ross County in January, whom he represented eight times.
Lalkovic came through the ranks at Chelsea and had several spells out on loan before first joining Czech side Mlada Boleslav and then returning to England with Barnsley.
He moved to the Bescot Stadium in the summer of 2015, scoring eight goals in 51 appearances during the 2015/16 campaign.