Premier League bosses. The warning comes amid growing fears that football's failure to follow strict protocols could ruin efforts to keep elite sport going during the current Covid-19 lockdown.The Premier League has introduced stronger Covid protocols at clubs this week, in a bid to reduce the growing number of positive cases and postponed games.These include making substitutes wear masks when sat in the stands and banning "unnecessary contact at all times" between players, managers and coaching staff, including handshakes and hugging.But following numerous breaches of the rules during last weekend's FA Cup third round ties, Premier League chiefs fear those in question are not taking the issue seriously enough.In conjunction with the.