diff --git a/core/block_processor.go b/core/block_processor.go
index 6db3c25f5a..0eb3f89201 100644
--- a/core/block_processor.go
+++ b/core/block_processor.go
@@ -8,11 +8,9 @@ import (
 	"time"
 
 	"github.com/ethereum/go-ethereum/core/types"
-	"github.com/ethereum/go-ethereum/crypto"
 	"github.com/ethereum/go-ethereum/ethutil"
 	"github.com/ethereum/go-ethereum/event"
 	"github.com/ethereum/go-ethereum/logger"
-	"github.com/ethereum/go-ethereum/p2p"
 	"github.com/ethereum/go-ethereum/pow"
 	"github.com/ethereum/go-ethereum/pow/ezp"
 	"github.com/ethereum/go-ethereum/state"
@@ -25,20 +23,6 @@ type PendingBlockEvent struct {
 
 var statelogger = logger.NewLogger("BLOCK")
 
-type EthManager interface {
-	BlockProcessor() *BlockProcessor
-	ChainManager() *ChainManager
-	TxPool() *TxPool
-	PeerCount() int
-	IsMining() bool
-	IsListening() bool
-	Peers() []*p2p.Peer
-	KeyManager() *crypto.KeyManager
-	ClientIdentity() p2p.ClientIdentity
-	Db() ethutil.Database
-	EventMux() *event.TypeMux
-}
-
 type BlockProcessor struct {
 	db ethutil.Database
 	// Mutex for locking the block processor. Blocks can only be handled one at a time
diff --git a/core/manager.go b/core/manager.go
new file mode 100644
index 0000000000..4671573b16
--- /dev/null
+++ b/core/manager.go
@@ -0,0 +1,22 @@
+package core
+
+import (
+	"github.com/ethereum/go-ethereum/crypto"
+	"github.com/ethereum/go-ethereum/ethutil"
+	"github.com/ethereum/go-ethereum/event"
+	"github.com/ethereum/go-ethereum/p2p"
+)
+
+type EthManager interface {
+	BlockProcessor() *BlockProcessor
+	ChainManager() *ChainManager
+	TxPool() *TxPool
+	PeerCount() int
+	IsMining() bool
+	IsListening() bool
+	Peers() []*p2p.Peer
+	KeyManager() *crypto.KeyManager
+	ClientIdentity() p2p.ClientIdentity
+	Db() ethutil.Database
+	EventMux() *event.TypeMux
+}