Borussia Dortmund’s personnel concerns are dwindling in time for the first leg of the Champions League semi-final against Paris Saint-Germain on Wednesday and the team will have some key players back. Forward Donyell Malen has trained on Monday after recovering from a thigh injury and is expected to be available, coach Edin Terzic said in a news conference on Tuesday. Malen is Dortmund’s second top scorer with 11 goals, one less than Niclas Füllkrug. Midfielder Marcel Sabitzer, who has recovered from a cold, is also expected to play as well as defender Mats Hummels, who was subbed off during S…